head 1.1; branch 1.1.1; access; symbols perseant-exfatfs-base-20261102:1.1.1.10 netbsd-11-1-RELEASE:1.1.1.9.2.1 netbsd-10-2-RELEASE:1.1.1.7.2.1 netbsd-9-5-RELEASE:1.1.1.5.14.1 netbsd-11-0-RELEASE:1.1.1.9.2.1 netbsd-11-0-RC7:1.1.1.9.2.1 netbsd-11-0-RC6:1.1.1.9.2.1 netbsd-11-0-RC5:1.1.1.9.2.1 netbsd-11-0-RC4:1.1.1.9.2.1 PFIX-3-11-2:1.1.1.10 netbsd-11-0-RC3:1.1.1.9 netbsd-11-0-RC2:1.1.1.9 netbsd-11-0-RC1:1.1.1.9 perseant-exfatfs-base-20250801:1.1.1.9 netbsd-11:1.1.1.9.0.2 netbsd-11-base:1.1.1.9 PFIX-3-10-1:1.1.1.9 netbsd-10-1-RELEASE:1.1.1.7.2.1 perseant-exfatfs-base-20240630:1.1.1.8 perseant-exfatfs:1.1.1.8.0.2 perseant-exfatfs-base:1.1.1.8 netbsd-8-3-RELEASE:1.1.1.5 netbsd-9-4-RELEASE:1.1.1.5.14.1 netbsd-10-0-RELEASE:1.1.1.7.2.1 netbsd-10-0-RC6:1.1.1.7.2.1 netbsd-10-0-RC5:1.1.1.7.2.1 netbsd-10-0-RC4:1.1.1.7.2.1 netbsd-10-0-RC3:1.1.1.7.2.1 netbsd-10-0-RC2:1.1.1.7.2.1 PFIX-3-8-4:1.1.1.8 netbsd-10-0-RC1:1.1.1.7 netbsd-10:1.1.1.7.0.2 netbsd-10-base:1.1.1.7 PFIX-3-7-3:1.1.1.7 netbsd-9-3-RELEASE:1.1.1.5 cjep_sun2x-base1:1.1.1.6 cjep_sun2x:1.1.1.6.0.4 cjep_sun2x-base:1.1.1.6 cjep_staticlib_x-base1:1.1.1.6 netbsd-9-2-RELEASE:1.1.1.5 cjep_staticlib_x:1.1.1.6.0.2 cjep_staticlib_x-base:1.1.1.6 netbsd-9-1-RELEASE:1.1.1.5 PFIX-3-5-2:1.1.1.6 phil-wifi-20200421:1.1.1.6 phil-wifi-20200411:1.1.1.6 is-mlppp:1.1.1.5.0.16 is-mlppp-base:1.1.1.5 phil-wifi-20200406:1.1.1.6 netbsd-8-2-RELEASE:1.1.1.5 PFIX-3-5-0:1.1.1.6 netbsd-9-0-RELEASE:1.1.1.5 netbsd-9-0-RC2:1.1.1.5 netbsd-9-0-RC1:1.1.1.5 phil-wifi-20191119:1.1.1.5 netbsd-9:1.1.1.5.0.14 netbsd-9-base:1.1.1.5 phil-wifi-20190609:1.1.1.5 netbsd-8-1-RELEASE:1.1.1.5 netbsd-8-1-RC1:1.1.1.5 pgoyette-compat-merge-20190127:1.1.1.5 pgoyette-compat-20190127:1.1.1.5 pgoyette-compat-20190118:1.1.1.5 pgoyette-compat-1226:1.1.1.5 pgoyette-compat-1126:1.1.1.5 pgoyette-compat-1020:1.1.1.5 pgoyette-compat-0930:1.1.1.5 pgoyette-compat-0906:1.1.1.5 netbsd-7-2-RELEASE:1.1.1.4 pgoyette-compat-0728:1.1.1.5 netbsd-8-0-RELEASE:1.1.1.5 phil-wifi:1.1.1.5.0.12 phil-wifi-base:1.1.1.5 pgoyette-compat-0625:1.1.1.5 netbsd-8-0-RC2:1.1.1.5 pgoyette-compat-0521:1.1.1.5 pgoyette-compat-0502:1.1.1.5 pgoyette-compat-0422:1.1.1.5 netbsd-8-0-RC1:1.1.1.5 pgoyette-compat-0415:1.1.1.5 pgoyette-compat-0407:1.1.1.5 pgoyette-compat-0330:1.1.1.5 pgoyette-compat-0322:1.1.1.5 pgoyette-compat-0315:1.1.1.5 netbsd-7-1-2-RELEASE:1.1.1.4 pgoyette-compat:1.1.1.5.0.10 pgoyette-compat-base:1.1.1.5 netbsd-7-1-1-RELEASE:1.1.1.4 matt-nb8-mediatek:1.1.1.5.0.8 matt-nb8-mediatek-base:1.1.1.5 perseant-stdc-iso10646:1.1.1.5.0.6 perseant-stdc-iso10646-base:1.1.1.5 netbsd-8:1.1.1.5.0.4 netbsd-8-base:1.1.1.5 prg-localcount2-base3:1.1.1.5 prg-localcount2-base2:1.1.1.5 prg-localcount2-base1:1.1.1.5 prg-localcount2:1.1.1.5.0.2 prg-localcount2-base:1.1.1.5 pgoyette-localcount-20170426:1.1.1.5 bouyer-socketcan-base1:1.1.1.5 pgoyette-localcount-20170320:1.1.1.5 netbsd-7-1:1.1.1.4.0.12 netbsd-7-1-RELEASE:1.1.1.4 netbsd-7-1-RC2:1.1.1.4 PFIX-3-1-4:1.1.1.5 netbsd-7-nhusb-base-20170116:1.1.1.4 bouyer-socketcan:1.1.1.4.0.10 bouyer-socketcan-base:1.1.1.4 pgoyette-localcount-20170107:1.1.1.4 netbsd-7-1-RC1:1.1.1.4 pgoyette-localcount-20161104:1.1.1.4 netbsd-7-0-2-RELEASE:1.1.1.4 localcount-20160914:1.1.1.4 netbsd-7-nhusb:1.1.1.4.0.8 netbsd-7-nhusb-base:1.1.1.4 pgoyette-localcount-20160806:1.1.1.4 pgoyette-localcount-20160726:1.1.1.4 pgoyette-localcount:1.1.1.4.0.6 pgoyette-localcount-base:1.1.1.4 netbsd-7-0-1-RELEASE:1.1.1.4 netbsd-7-0:1.1.1.4.0.4 netbsd-7-0-RELEASE:1.1.1.4 PFIX-2-11-6:1.1.1.4 netbsd-7-0-RC3:1.1.1.4 netbsd-7-0-RC2:1.1.1.4 netbsd-7-0-RC1:1.1.1.4 PFIX-2-11-4:1.1.1.4 PFIX-2-11-3:1.1.1.4 netbsd-6-0-6-RELEASE:1.1.1.1 netbsd-6-1-5-RELEASE:1.1.1.1 netbsd-7:1.1.1.4.0.2 netbsd-7-base:1.1.1.4 PFIX-2-11-1:1.1.1.4 yamt-pagecache-base9:1.1.1.3 yamt-pagecache-tag8:1.1.1.1.6.1 netbsd-6-1-4-RELEASE:1.1.1.1 netbsd-6-0-5-RELEASE:1.1.1.1 tls-earlyentropy:1.1.1.3.0.2 tls-earlyentropy-base:1.1.1.4 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.3 riastradh-drm2-base3:1.1.1.3 PFIX-2-10-3:1.1.1.3 netbsd-6-1-3-RELEASE:1.1.1.1 netbsd-6-0-4-RELEASE:1.1.1.1 netbsd-6-1-2-RELEASE:1.1.1.1 netbsd-6-0-3-RELEASE:1.1.1.1 PFIX-2-10-2:1.1.1.3 PFIX-2-9-7:1.1.1.2 netbsd-6-1-1-RELEASE:1.1.1.1 riastradh-drm2-base2:1.1.1.2 riastradh-drm2-base1:1.1.1.2 riastradh-drm2:1.1.1.2.0.2 riastradh-drm2-base:1.1.1.2 netbsd-6-1:1.1.1.1.0.16 netbsd-6-0-2-RELEASE:1.1.1.1 netbsd-6-1-RELEASE:1.1.1.1 netbsd-6-1-RC4:1.1.1.1 netbsd-6-1-RC3:1.1.1.1 agc-symver:1.1.1.2.0.4 agc-symver-base:1.1.1.2 netbsd-6-1-RC2:1.1.1.1 netbsd-6-1-RC1:1.1.1.1 yamt-pagecache-base8:1.1.1.2 PFIX-2-9-5:1.1.1.2 PFIX-2-8-13:1.1.1.1 netbsd-6-0-1-RELEASE:1.1.1.1 yamt-pagecache-base7:1.1.1.1 matt-nb6-plus-nbase:1.1.1.1 yamt-pagecache-base6:1.1.1.1 netbsd-6-0:1.1.1.1.0.14 netbsd-6-0-RELEASE:1.1.1.1 netbsd-6-0-RC2:1.1.1.1 tls-maxphys:1.1.1.1.0.12 tls-maxphys-base:1.1.1.4 matt-nb6-plus:1.1.1.1.0.10 matt-nb6-plus-base:1.1.1.1 netbsd-6-0-RC1:1.1.1.1 PFIX-2-8-12:1.1.1.1 PFIX-2-8-11:1.1.1.1 yamt-pagecache-base5:1.1.1.1 yamt-pagecache-base4:1.1.1.1 PFIX-2-8-8:1.1.1.1 netbsd-6:1.1.1.1.0.8 netbsd-6-base:1.1.1.1 yamt-pagecache-base3:1.1.1.1 PFIX-2-8-7:1.1.1.1 yamt-pagecache-base2:1.1.1.1 yamt-pagecache:1.1.1.1.0.6 yamt-pagecache-base:1.1.1.1 PFIX-2-8-6:1.1.1.1 PFIX-2-8-5:1.1.1.1 PFIX-2-8-4:1.1.1.1 cherry-xenmp:1.1.1.1.0.4 cherry-xenmp-base:1.1.1.1 PFIX-2-8-3:1.1.1.1 PFIX-2-8-2:1.1.1.1 bouyer-quota2:1.1.1.1.0.2 bouyer-quota2-nbase:1.1.1.1 PFIX-2-8-1:1.1.1.1 VENEMA:1.1.1; locks; strict; comment @# @; 1.1 date 2011.03.02.19.31.47; author tron; state Exp; branches 1.1.1.1; next ; 1.1.1.1 date 2011.03.02.19.31.47; author tron; state Exp; branches 1.1.1.1.2.1 1.1.1.1.6.1 1.1.1.1.12.1; next 1.1.1.2; 1.1.1.2 date 2013.01.02.18.58.42; author tron; state Exp; branches; next 1.1.1.3; 1.1.1.3 date 2013.09.25.19.06.24; author tron; state Exp; branches 1.1.1.3.2.1; next 1.1.1.4; commitid WQnWePIKINywUQ6x; 1.1.1.4 date 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2023.12.25.12.43.25; author martin; state Exp; branches; next ; commitid UCTK9IHygwOntQRE; 1.1.1.8.2.1 date 2025.08.02.05.49.54; author perseant; state Exp; branches; next 1.1.1.8.2.2; commitid 23j6GFaDws3O875G; 1.1.1.8.2.2 date 2026.11.04.23.14.40; author perseant; state Exp; branches; next ; commitid 3QTNojfCEH9lUb2H; 1.1.1.9.2.1 date 2026.05.11.17.13.39; author martin; state Exp; branches; next ; commitid 2QeqaJm8KrXk4qFG; desc @@ 1.1 log @Initial revision @ text @ Postfix manual - postscreen(8) 
POSTSCREEN(8)                                                    POSTSCREEN(8)

NAME
       postscreen - Postfix zombie blocker

SYNOPSIS
       postscreen [generic Postfix daemon options]

DESCRIPTION
       The Postfix postscreen(8) server performs triage on multi-
       ple inbound SMTP connections at the  same  time.  While  a
       single  postscreen(8)  process  keeps  spambots  away from
       Postfix SMTP server processes, more  Postfix  SMTP  server
       processes remain available for legitimate clients.

       This program should not be used on SMTP ports that receive
       mail from end-user clients (MUAs). In  a  typical  deploy-
       ment,  postscreen(8)  is  used  on  the "port 25" service,
       while MUA clients submit mail via the submission  service.

       postscreen(8)  maintains a temporary whitelist for clients
       that have passed a number of tests.  When an  SMTP  client
       IP  address  is  whitelisted,  postscreen(8) hands off the
       connection immediately to a Postfix SMTP  server  process.
       This minimizes the overhead for legitimate mail.

       By  default,  postscreen(8)  logs statistics and hands off
       every connection to a Postfix SMTP server  process,  while
       excluding clients in mynetworks from all tests (primarily,
       to avoid problems with non-standard  SMTP  implementations
       in  network  appliances).   This  mode  is useful for non-
       destructive testing.

       In a typical production setting, postscreen(8) is  config-
       ured  to  reject  mail  from clients that fail one or more
       tests. postscreen(8) logs rejected mail  with  the  client
       address, helo, sender and recipient information.

       postscreen(8)  is  not an SMTP proxy; this is intentional.
       The purpose is to keep spambots  away  from  Postfix  SMTP
       server processes, while minimizing overhead for legitimate
       traffic.

SECURITY
       The postscreen(8) server is moderately security-sensitive.
       It  talks to untrusted clients on the network. The process
       can be run chrooted at fixed low privilege.

STANDARDS
       RFC 821 (SMTP protocol)
       RFC 1123 (Host requirements)
       RFC 1652 (8bit-MIME transport)
       RFC 1869 (SMTP service extensions)
       RFC 1870 (Message Size Declaration)
       RFC 1985 (ETRN command)
       RFC 2034 (SMTP Enhanced Status Codes)
       RFC 2821 (SMTP protocol)
       Not: RFC 2920 (SMTP Pipelining)
       RFC 3207 (STARTTLS command)
       RFC 3461 (SMTP DSN Extension)
       RFC 3463 (Enhanced Status Codes)
       RFC 5321 (SMTP protocol, including multi-line 220 banners)

DIAGNOSTICS
       Problems and transactions are logged to syslogd(8).

BUGS
       The postscreen(8) built-in SMTP protocol engine  currently
       does  not  announce support for AUTH, XCLIENT or XFORWARD.
       Support for AUTH may be added in the future.  In the  mean
       time, if you need to make these services available on port
       25, then do not enable  the  optional  "after  220  server
       greeting" tests, and do not use DNSBLs that reject traffic
       from dial-up and residential networks.

       The optional "after 220  server  greeting"  tests  involve
       postscreen(8)'s  built-in SMTP protocol engine. When these
       tests succeed, postscreen(8) adds the client to the tempo-
       rary  whitelist but it cannot not hand off the "live" con-
       nection to a Postfix SMTP server process in the middle  of
       a  session.   Instead,  postscreen(8)  defers  attempts to
       deliver mail with a 4XX status, and waits for  the  client
       to  disconnect.   The next time a good client connects, it
       will be allowed to talk to a Postfix SMTP  server  process
       to  deliver  mail.  postscreen(8)  mitigates the impact of
       this limitation by giving such  tests  a  long  expiration
       time.

CONFIGURATION PARAMETERS
       Changes  to  main.cf  are  not picked up automatically, as
       postscreen(8) processes may run for  several  hours.   Use
       the command "postfix reload" after a configuration change.

       The text below provides  only  a  parameter  summary.  See
       postconf(5) for more details including examples.

       NOTE:  Some  postscreen(8)  parameters  implement  stress-
       dependent behavior.   This  is  supported  only  when  the
       default  parameter  value is stress-dependent (that is, it
       looks like ${stress?X}${stress:Y}, or it is the  $name  of
       an  smtpd  parameter  with  a  stress-dependent  default).
       Other parameters always evaluate as if the stress  parame-
       ter value is the empty string.

COMPATIBILITY CONTROLS
       postscreen_command_filter ($smtpd_command_filter)
              A  mechanism to transform commands from remote SMTP
              clients.

       postscreen_discard_ehlo_keyword_address_maps  ($smtpd_dis-
       card_ehlo_keyword_address_maps)
              Lookup tables, indexed by the  remote  SMTP  client
              address,  with  case insensitive lists of EHLO key-
              words (pipelining, starttls, auth, etc.)  that  the
              postscreen(8)  server  will  not  send  in the EHLO
              response to a remote SMTP client.

       postscreen_discard_ehlo_keywords ($smtpd_discard_ehlo_key-
       words)
              A case insensitive list of EHLO keywords  (pipelin-
              ing,  starttls,  auth, etc.) that the postscreen(8)
              server will not send in  the  EHLO  response  to  a
              remote SMTP client.

TROUBLE SHOOTING CONTROLS
       postscreen_expansion_filter (see 'postconf -d' output)
              List   of   characters   that   are   permitted  in
              postscreen_reject_footer attribute expansions.

       postscreen_reject_footer ($smtpd_reject_footer)
              Optional information that is appended after  a  4XX
              or 5XX server response.

       soft_bounce (no)
              Safety net to keep mail queued that would otherwise
              be returned to the sender.

PERMANENT WHITE/BLACKLIST TEST
       This test is executed  immediately  after  a  remote  SMTP
       client  connects.  If a client is permanently whitelisted,
       the client will be handed off  immediately  to  a  Postfix
       SMTP server process.

       postscreen_access_list (permit_mynetworks)
              Permanent white/blacklist for remote SMTP client IP
              addresses.

       postscreen_blacklist_action (ignore)
              The action that postscreen(8) takes  when  an  SMTP
              client   is   permanently   blacklisted   with  the
              postscreen_access_list parameter.

BEFORE-GREETING TESTS
       These tests are executed before  the  remote  SMTP  client
       receives the "220 servername" greeting. If no tests remain
       after the successful completion of this phase, the  client
       will  be  handed  off immediately to a Postfix SMTP server
       process.

       dnsblog_service_name (dnsblog)
              The name of the dnsblog(8) service  entry  in  mas-
              ter.cf.

       postscreen_dnsbl_action (ignore)
              The  action  that  postscreen(8) takes when an SMTP
              client's  combined  DNSBL  score  is  equal  to  or
              greater  than  a  threshold  (as  defined  with the
              postscreen_dnsbl_sites and postscreen_dnsbl_thresh-
              old parameters).

       postscreen_dnsbl_reply_map (empty)
              A  mapping  from  actual  DNSBL  domain  name which
              includes a secret password,  to  the  DNSBL  domain
              name  that  postscreen  will  reply  with  when  it
              rejects mail.

       postscreen_dnsbl_sites (empty)
              Optional list of DNS white/blacklist domains,  fil-
              ters and weight factors.

       postscreen_dnsbl_threshold (1)
              The  inclusive  lower  bound  for  blocking an SMTP
              client,  based  on  its  combined  DNSBL  score  as
              defined  with the postscreen_dnsbl_sites parameter.

       postscreen_greet_action (ignore)
              The action that postscreen(8) takes  when  an  SMTP
              client speaks before its turn within the time spec-
              ified with the postscreen_greet_wait parameter.

       postscreen_greet_banner ($smtpd_banner)
              The  text  in  the  optional  "220-text..."  server
              response that postscreen(8) sends ahead of the real
              Postfix SMTP server's "220 text..." response, in an
              attempt  to  confuse  bad SMTP clients so that they
              speak before their turn (pre-greet).

       postscreen_greet_wait (${stress?2}${stress:6}s)
              The amount of time that postscreen(8) will wait for
              an  SMTP  client to send a command before its turn,
              and for DNS  blocklist  lookup  results  to  arrive
              (default:  up  to  2  seconds under stress, up to 6
              seconds otherwise).

       smtpd_service_name (smtpd)
              The internal service  that  postscreen(8)  forwards
              allowed connections to.

AFTER-GREETING TESTS
       These  tests  are  executed  after  the remote SMTP client
       receives the "220 servername" greeting. If a client passes
       all  tests  during  this  phase,  it  will  receive  a 4XX
       response to RCPT TO commands until the  client  hangs  up.
       After this, the client will be allowed to talk directly to
       a Postfix SMTP server process.

       postscreen_bare_newline_action (ignore)
              The action that postscreen(8) takes  when  an  SMTP
              client  sends  a bare newline character, that is, a
              newline not preceded by carriage return.

       postscreen_bare_newline_enable (no)
              Enable "bare newline" SMTP protocol  tests  in  the
              postscreen(8) server.

       postscreen_disable_vrfy_command ($disable_vrfy_command)
              Disable  the SMTP VRFY command in the postscreen(8)
              daemon.

       postscreen_forbidden_commands ($smtpd_forbidden_commands)
              List of commands that the postscreen(8) server con-
              siders in violation of the SMTP protocol.

       postscreen_helo_required ($smtpd_helo_required)
              Require  that  a  remote  SMTP client sends HELO or
              EHLO before commencing a MAIL transaction.

       postscreen_non_smtp_command_action (drop)
              The action that postscreen(8) takes  when  an  SMTP
              client  sends  non-SMTP  commands as specified with
              the postscreen_forbidden_commands parameter.

       postscreen_non_smtp_command_enable (no)
              Enable   "non-SMTP   command"    tests    in    the
              postscreen(8) server.

       postscreen_pipelining_action (enforce)
              The  action  that  postscreen(8) takes when an SMTP
              client sends multiple commands instead  of  sending
              one  command and waiting for the server to respond.

       postscreen_pipelining_enable (no)
              Enable "pipelining"  SMTP  protocol  tests  in  the
              postscreen(8) server.

CACHE CONTROLS
       postscreen_cache_cleanup_interval (12h)
              The  amount  of  time  between  postscreen(8) cache
              cleanup runs.

       postscreen_cache_map                   (btree:$data_direc-
       tory/postscreen_cache)
              Persistent storage  for  the  postscreen(8)  server
              decisions.

       postscreen_cache_retention_time (7d)
              The amount of time that postscreen(8) will cache an
              expired temporary  whitelist  entry  before  it  is
              removed.

       postscreen_bare_newline_ttl (30d)
              The  amount of time that postscreen(8) will use the
              result from a successful "bare newline" SMTP proto-
              col test.

       postscreen_dnsbl_ttl (1h)
              The  amount of time that postscreen(8) will use the
              result from a successful DNS blocklist test.

       postscreen_greet_ttl (1d)
              The amount of time that postscreen(8) will use  the
              result from a successful PREGREET test.

       postscreen_non_smtp_command_ttl (30d)
              The  amount of time that postscreen(8) will use the
              result from a  successful  "non_smtp_command"  SMTP
              protocol test.

       postscreen_pipelining_ttl (30d)
              The  amount of time that postscreen(8) will use the
              result from a successful "pipelining" SMTP protocol
              test.

RESOURCE CONTROLS
       line_length_limit (2048)
              Upon  input,  long lines are chopped up into pieces
              of at most this length; upon delivery,  long  lines
              are reconstructed.

       postscreen_client_connection_count_limit
       ($smtpd_client_connection_count_limit)
              How  many  simultaneous  connections  any client is
              allowed to have with the postscreen(8) daemon.

       postscreen_command_count_limit (20)
              The limit on the total number of commands per  SMTP
              session  for postscreen(8)'s built-in SMTP protocol
              engine.

       postscreen_command_time_limit (${stress?10}${stress:300}s)
              The time limit to read an entire command line  with
              postscreen(8)'s built-in SMTP protocol engine.

       postscreen_post_queue_limit ($default_process_limit)
              The  number of clients that can be waiting for ser-
              vice from a real SMTP server process.

       postscreen_pre_queue_limit ($default_process_limit)
              The number of non-whitelisted clients that  can  be
              waiting  for  a  decision whether they will receive
              service from a real SMTP server process.

       postscreen_watchdog_timeout (10s)
              How much time a postscreen(8) process may  take  to
              respond  to  an SMTP client command or to perform a
              cache operation before it is terminated by a built-
              in watchdog timer.

STARTTLS CONTROLS
       postscreen_tls_security_level ($smtpd_tls_security_level)
              The  SMTP  TLS security level for the postscreen(8)
              server; when a non-empty value is  specified,  this
              overrides       the       obsolete       parameters
              postscreen_use_tls and postscreen_enforce_tls.

       tlsproxy_service_name (tlsproxy)
              The name of the tlsproxy(8) service entry  in  mas-
              ter.cf.

OBSOLETE STARTTLS SUPPORT CONTROLS
       These  parameters  are  supported  for  compatibility with
       smtpd(8) legacy parameters.

       postscreen_use_tls ($smtpd_use_tls)
              Opportunistic TLS:  announce  STARTTLS  support  to
              SMTP  clients,  but do not require that clients use
              TLS encryption.

       postscreen_enforce_tls ($smtpd_enforce_tls)
              Mandatory TLS: announce STARTTLS  support  to  SMTP
              clients,  and  require that clients use TLS encryp-
              tion.

MISCELLANEOUS CONTROLS
       config_directory (see 'postconf -d' output)
              The default location of  the  Postfix  main.cf  and
              master.cf configuration files.

       delay_logging_resolution_limit (2)
              The  maximal  number  of  digits  after the decimal
              point when logging sub-second delay values.

       command_directory (see 'postconf -d' output)
              The location of  all  postfix  administrative  com-
              mands.

       max_idle (100s)
              The  maximum  amount  of  time that an idle Postfix
              daemon process waits  for  an  incoming  connection
              before terminating voluntarily.

       process_id (read-only)
              The  process  ID  of  a  Postfix  command or daemon
              process.

       process_name (read-only)
              The process name of a  Postfix  command  or  daemon
              process.

       syslog_facility (mail)
              The syslog facility of Postfix logging.

       syslog_name (see 'postconf -d' output)
              The  mail  system  name  that  is  prepended to the
              process name in syslog  records,  so  that  "smtpd"
              becomes, for example, "postfix/smtpd".

SEE ALSO
       smtpd(8), Postfix SMTP server
       tlsproxy(8), Postfix TLS proxy server
       dnsblog(8), DNS black/whitelist logger
       syslogd(8), system logging

README FILES
       POSTSCREEN_README, Postfix Postscreen Howto

LICENSE
       The Secure Mailer license must be  distributed  with  this
       software.

HISTORY
       This service was introduced with Postfix version 2.8.

       Many  ideas in postscreen(8) were explored in earlier work
       by Michael Tokarev, in OpenBSD spamd, and in  MailChannels
       Traffic Control.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

                                                                 POSTSCREEN(8)
@ 1.1.1.1 log @Import Postfix 2.8.1. Changes since version 2.7.*: Postfix stable release 2.8.0 is available. This release continues the move towards improving code and documentation, and making the system better prepared for changes in the threat environment. The postscreen daemon (a zombie blocker in front of Postfix) is now included with the stable release. postscreen now supports TLS and can log the rejected sender, recipient and helo information. See the POSTSCREEN_README file for recommended usage scenarios. Support for DNS whitelisting (permit_rhswl_client), and for pattern matching to filter the responses from DNS white/blacklist servers (e.g., reject_rhsbl_client zen.spamhaus.org=127.0.0.[1..10]). Improved message tracking across SMTP-based content filters; the after-filter SMTP server can log the before-filter queue ID (the XCLIENT protocol was extended). Read-only support for sqlite databases. See sqlite_table(5) and SQLITE_README. Support for 'footers' that are appended to SMTP server "reject" responses. See "smtpd_reject_footer" in the postconf(5) manpage. @ text @@ 1.1.1.1.12.1 log @resync with head @ text @d25 1 a25 4 while MUA clients submit mail via the submission service, or via a "port 25" server that provides no MX service (i.e. a dedicated server that provides submission service on port 25). d138 1 a138 1 or 5XX postscreen(8) server response. d155 2 a156 2 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the a158 15 MAIL EXCHANGER POLICY TESTS When a remote SMTP client is not on the permanent access list, postscreen(8) can implement a number of whitelist tests before it grants the client a temporary whitelist status to talk to a Postfix SMTP server process. By listening on both primary and backup MX addresses, postscreen(8) can deny the temporary whitelist status to clients that connect only to backup MX hosts. postscreen_whitelist_interfaces (static:all) A list of local postscreen(8) server IP addresses where a non-whitelisted remote SMTP client can obtain postscreen(8)'s temporary whitelist status. d171 2 a172 2 The action that postscreen(8) takes when a remote SMTP client's combined DNSBL score is equal to or d188 2 a189 2 The inclusive lower bound for blocking a remote SMTP client, based on its combined DNSBL score as d193 3 a195 3 The action that postscreen(8) takes when a remote SMTP client speaks before its turn within the time specified with the postscreen_greet_wait parameter. d201 1 a201 1 attempt to confuse bad SMTP clients so that they d206 3 a208 3 an SMTP client to send a command before its turn, and for DNS blocklist lookup results to arrive (default: up to 2 seconds under stress, up to 6 d212 1 a212 1 The internal service that postscreen(8) hands off d216 1 a216 1 These tests are executed after the remote SMTP client d218 2 a219 2 all tests during this phase, it will receive a 4XX response to RCPT TO commands until the client hangs up. d224 3 a226 3 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded by carriage return. d229 1 a229 1 Enable "bare newline" SMTP protocol tests in the d233 1 a233 1 Disable the SMTP VRFY command in the postscreen(8) d241 1 a241 1 Require that a remote SMTP client sends HELO or d245 3 a247 3 The action that postscreen(8) takes when a remote SMTP client sends non-SMTP commands as specified with the postscreen_forbidden_commands parameter. d250 1 a250 1 Enable "non-SMTP command" tests in the d254 3 a256 4 The action that postscreen(8) takes when a remote SMTP client sends multiple commands instead of sending one command and waiting for the server to respond. d259 1 a259 1 Enable "pipelining" SMTP protocol tests in the d264 1 a264 1 The amount of time between postscreen(8) cache d269 1 a269 1 Persistent storage for the postscreen(8) server d274 1 a274 1 expired temporary whitelist entry before it is d278 1 a278 1 The amount of time that postscreen(8) will use the d283 1 a283 1 The amount of time that postscreen(8) will use the d287 1 a287 1 The amount of time that postscreen(8) will use the d291 2 a292 2 The amount of time that postscreen(8) will use the result from a successful "non_smtp_command" SMTP d296 1 a296 1 The amount of time that postscreen(8) will use the d302 2 a303 2 Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines d308 2 a309 3 How many simultaneous connections any remote SMTP client is allowed to have with the postscreen(8) daemon. d322 1 a322 1 vice from a real Postfix SMTP server process. d327 1 a327 1 service from a real Postfix SMTP server process. d331 3 a333 3 respond to a remote SMTP client command or to per- form a cache operation before it is terminated by a built-in watchdog timer. d352 2 a353 2 remote SMTP clients, but do not require that clients use TLS encryption. d356 3 a358 3 Mandatory TLS: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption. @ 1.1.1.1.12.2 log @Rebase to HEAD as of a few days ago. @ text @d16 36 a51 35 The Postfix postscreen(8) server provides additional protection against mail server overload. One postscreen(8) process handles multiple inbound SMTP connections, and decides which clients may talk to a Post- fix SMTP server process. By keeping spambots away, postscreen(8) leaves more SMTP server processes available for legitimate clients, and delays the onset of server overload conditions. This program should not be used on SMTP ports that receive mail from end-user clients (MUAs). In a typical deployment, postscreen(8) handles the MX service on TCP port 25, while MUA clients submit mail via the submission service on TCP port 587 which requires client authentica- tion. Alternatively, a site could set up a dedicated, non-postscreen, "port 25" server that provides submission service and client authenti- cation, but no MX service. postscreen(8) maintains a temporary whitelist for clients that have passed a number of tests. When an SMTP client IP address is whitelisted, postscreen(8) hands off the connection immediately to a Postfix SMTP server process. This minimizes the overhead for legitimate mail. By default, postscreen(8) logs statistics and hands off every connec- tion to a Postfix SMTP server process, while excluding clients in mynetworks from all tests (primarily, to avoid problems with non-stan- dard SMTP implementations in network appliances). This mode is useful for non-destructive testing. In a typical production setting, postscreen(8) is configured to reject mail from clients that fail one or more tests. postscreen(8) logs rejected mail with the client address, helo, sender and recipient information. postscreen(8) is not an SMTP proxy; this is intentional. The purpose is to keep spambots away from Postfix SMTP server processes, while min- imizing overhead for legitimate traffic. d54 3 a56 3 The postscreen(8) server is moderately security-sensitive. It talks to untrusted clients on the network. The process can be run chrooted at fixed low privilege. d77 20 a96 16 The postscreen(8) built-in SMTP protocol engine currently does not announce support for AUTH, XCLIENT or XFORWARD. If you need to make these services available on port 25, then do not enable the optional "after 220 server greeting" tests, and do not use DNSBLs that reject traffic from dial-up and residential networks. The optional "after 220 server greeting" tests involve postscreen(8)'s built-in SMTP protocol engine. When these tests succeed, postscreen(8) adds the client to the temporary whitelist, but it cannot not hand off the "live" connection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client connects again, postscreen(8) will allow the client to talk to a Post- fix SMTP server process (provided that the whitelist status has not expired). postscreen(8) mitigates the impact of this limitation by giving the "after 220 server greeting" tests a long expiration time. d99 14 a112 13 Changes to main.cf are not picked up automatically, as postscreen(8) processes may run for several hours. Use the command "postfix reload" after a configuration change. The text below provides only a parameter summary. See postconf(5) for more details including examples. NOTE: Some postscreen(8) parameters implement stress-dependent behav- ior. This is supported only when the default parameter value is stress-dependent (that is, it looks like ${stress?X}${stress:Y}, or it is the $name of an smtpd parameter with a stress-dependent default). Other parameters always evaluate as if the stress parameter value is the empty string. d116 2 a117 1 A mechanism to transform commands from remote SMTP clients. d119 14 a132 11 postscreen_discard_ehlo_keyword_address_maps ($smtpd_discard_ehlo_key- word_address_maps) Lookup tables, indexed by the remote SMTP client address, with case insensitive lists of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the EHLO response to a remote SMTP client. postscreen_discard_ehlo_keywords ($smtpd_discard_ehlo_keywords) A case insensitive list of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the EHLO response to a remote SMTP client. d136 1 a136 1 List of characters that are permitted in d140 2 a141 2 Optional information that is appended after a 4XX or 5XX postscreen(8) server response. d144 2 a145 13 Safety net to keep mail queued that would otherwise be returned to the sender. BEFORE-POSTSCREEN PROXY AGENT Available in Postfix version 2.10 and later: postscreen_upstream_proxy_protocol (empty) The name of the proxy protocol used by an optional before- postscreen proxy agent. postscreen_upstream_proxy_timeout (5s) The time limit for the proxy protocol specified with the postscreen_upstream_proxy_protocol parameter. d148 4 a151 3 This test is executed immediately after a remote SMTP client connects. If a client is permanently whitelisted, the client will be handed off immediately to a Postfix SMTP server process. d154 2 a155 1 Permanent white/blacklist for remote SMTP client IP addresses. d158 3 a160 3 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the postscreen_access_list parame- ter. d163 8 a170 6 When postscreen(8) is configured to monitor all primary and backup MX addresses, it can refuse to whitelist clients that connect to a backup MX address only. For small sites, this requires configuring primary and backup MX addresses on the same MTA. Larger sites would have to share the postscreen(8) cache between primary and backup MTAs, which would introduce a common point of failure. d173 10 a182 9 A list of local postscreen(8) server IP addresses where a non- whitelisted remote SMTP client can obtain postscreen(8)'s tempo- rary whitelist status. BEFORE 220 GREETING TESTS These tests are executed before the remote SMTP client receives the "220 servername" greeting. If no tests remain after the successful com- pletion of this phase, the client will be handed off immediately to a Postfix SMTP server process. d185 2 a186 1 The name of the dnsblog(8) service entry in master.cf. d189 5 a193 4 The action that postscreen(8) takes when a remote SMTP client's combined DNSBL score is equal to or greater than a threshold (as defined with the postscreen_dnsbl_sites and postscreen_dnsbl_threshold parameters). d196 4 a199 3 A mapping from actual DNSBL domain name which includes a secret password, to the DNSBL domain name that postscreen will reply with when it rejects mail. d202 2 a203 2 Optional list of DNS white/blacklist domains, filters and weight factors. d206 3 a208 3 The inclusive lower bound for blocking a remote SMTP client, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. d211 3 a213 3 The action that postscreen(8) takes when a remote SMTP client speaks before its turn within the time specified with the postscreen_greet_wait parameter. d216 5 a220 4 The text in the optional "220-text..." server response that postscreen(8) sends ahead of the real Postfix SMTP server's "220 text..." response, in an attempt to confuse bad SMTP clients so that they speak before their turn (pre-greet). d223 5 a227 4 The amount of time that postscreen(8) will wait for an SMTP client to send a command before its turn, and for DNS blocklist lookup results to arrive (default: up to 2 seconds under stress, up to 6 seconds otherwise). d230 2 a231 2 The internal service that postscreen(8) hands off allowed con- nections to. d233 7 a239 13 Available in Postfix version 2.11 and later: postscreen_dnsbl_whitelist_threshold (0) Allow a remote SMTP client to skip "before" and "after 220 greeting" protocol tests, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. AFTER 220 GREETING TESTS These tests are executed after the remote SMTP client receives the "220 servername" greeting. If a client passes all tests during this phase, it will receive a 4XX response to all RCPT TO commands. After the client reconnects, it will be allowed to talk directly to a Postfix SMTP server process. d242 3 a244 3 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded by carriage return. d247 2 a248 2 Enable "bare newline" SMTP protocol tests in the postscreen(8) server. d251 2 a252 1 Disable the SMTP VRFY command in the postscreen(8) daemon. d255 2 a256 2 List of commands that the postscreen(8) server considers in vio- lation of the SMTP protocol. d259 2 a260 2 Require that a remote SMTP client sends HELO or EHLO before com- mencing a MAIL transaction. d263 3 a265 3 The action that postscreen(8) takes when a remote SMTP client sends non-SMTP commands as specified with the postscreen_forbid- den_commands parameter. d268 2 a269 1 Enable "non-SMTP command" tests in the postscreen(8) server. d272 4 a275 3 The action that postscreen(8) takes when a remote SMTP client sends multiple commands instead of sending one command and wait- ing for the server to respond. d278 2 a279 2 Enable "pipelining" SMTP protocol tests in the postscreen(8) server. d283 2 a284 1 The amount of time between postscreen(8) cache cleanup runs. d286 4 a289 2 postscreen_cache_map (btree:$data_directory/postscreen_cache) Persistent storage for the postscreen(8) server decisions. d292 3 a294 2 The amount of time that postscreen(8) will cache an expired tem- porary whitelist entry before it is removed. d297 3 a299 2 The amount of time that postscreen(8) will use the result from a successful "bare newline" SMTP protocol test. d302 2 a303 2 The amount of time that postscreen(8) will use the result from a successful DNS blocklist test. d306 2 a307 2 The amount of time that postscreen(8) will use the result from a successful PREGREET test. d310 3 a312 2 The amount of time that postscreen(8) will use the result from a successful "non_smtp_command" SMTP protocol test. d315 3 a317 2 The amount of time that postscreen(8) will use the result from a successful "pipelining" SMTP protocol test. d321 9 a329 7 Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines are reconstructed. postscreen_client_connection_count_limit ($smtpd_client_connec- tion_count_limit) How many simultaneous connections any remote SMTP client is allowed to have with the postscreen(8) daemon. d332 3 a334 2 The limit on the total number of commands per SMTP session for postscreen(8)'s built-in SMTP protocol engine. d337 1 a337 1 The time limit to read an entire command line with d341 2 a342 2 The number of clients that can be waiting for service from a real Postfix SMTP server process. d345 3 a347 3 The number of non-whitelisted clients that can be waiting for a decision whether they will receive service from a real Postfix SMTP server process. d350 4 a353 3 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation before it is terminated by a built-in watchdog timer. d357 4 a360 3 The SMTP TLS security level for the postscreen(8) server; when a non-empty value is specified, this overrides the obsolete param- eters postscreen_use_tls and postscreen_enforce_tls. d363 2 a364 1 The name of the tlsproxy(8) service entry in master.cf. d367 2 a368 2 These parameters are supported for compatibility with smtpd(8) legacy parameters. d371 3 a373 2 Opportunistic TLS: announce STARTTLS support to remote SMTP clients, but do not require that clients use TLS encryption. d376 3 a378 2 Mandatory TLS: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption. d382 2 a383 2 The default location of the Postfix main.cf and master.cf con- figuration files. d386 2 a387 2 The maximal number of digits after the decimal point when log- ging sub-second delay values. d390 2 a391 1 The location of all postfix administrative commands. d394 3 a396 2 The maximum amount of time that an idle Postfix daemon process waits for an incoming connection before terminating voluntarily. d399 2 a400 1 The process ID of a Postfix command or daemon process. d403 2 a404 1 The process name of a Postfix command or daemon process. d410 3 a412 3 The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "post- fix/smtpd". d424 2 a425 1 The Secure Mailer license must be distributed with this software. d430 3 a432 2 Many ideas in postscreen(8) were explored in earlier work by Michael Tokarev, in OpenBSD spamd, and in MailChannels Traffic Control. @ 1.1.1.1.6.1 log @sync with head @ text @d25 1 a25 4 while MUA clients submit mail via the submission service, or via a "port 25" server that provides no MX service (i.e. a dedicated server that provides submission service on port 25). d138 1 a138 1 or 5XX postscreen(8) server response. d155 2 a156 2 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the a158 15 MAIL EXCHANGER POLICY TESTS When a remote SMTP client is not on the permanent access list, postscreen(8) can implement a number of whitelist tests before it grants the client a temporary whitelist status to talk to a Postfix SMTP server process. By listening on both primary and backup MX addresses, postscreen(8) can deny the temporary whitelist status to clients that connect only to backup MX hosts. postscreen_whitelist_interfaces (static:all) A list of local postscreen(8) server IP addresses where a non-whitelisted remote SMTP client can obtain postscreen(8)'s temporary whitelist status. d171 2 a172 2 The action that postscreen(8) takes when a remote SMTP client's combined DNSBL score is equal to or d188 2 a189 2 The inclusive lower bound for blocking a remote SMTP client, based on its combined DNSBL score as d193 3 a195 3 The action that postscreen(8) takes when a remote SMTP client speaks before its turn within the time specified with the postscreen_greet_wait parameter. d201 1 a201 1 attempt to confuse bad SMTP clients so that they d206 3 a208 3 an SMTP client to send a command before its turn, and for DNS blocklist lookup results to arrive (default: up to 2 seconds under stress, up to 6 d212 1 a212 1 The internal service that postscreen(8) hands off d216 1 a216 1 These tests are executed after the remote SMTP client d218 2 a219 2 all tests during this phase, it will receive a 4XX response to RCPT TO commands until the client hangs up. d224 3 a226 3 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded by carriage return. d229 1 a229 1 Enable "bare newline" SMTP protocol tests in the d233 1 a233 1 Disable the SMTP VRFY command in the postscreen(8) d241 1 a241 1 Require that a remote SMTP client sends HELO or d245 3 a247 3 The action that postscreen(8) takes when a remote SMTP client sends non-SMTP commands as specified with the postscreen_forbidden_commands parameter. d250 1 a250 1 Enable "non-SMTP command" tests in the d254 3 a256 4 The action that postscreen(8) takes when a remote SMTP client sends multiple commands instead of sending one command and waiting for the server to respond. d259 1 a259 1 Enable "pipelining" SMTP protocol tests in the d264 1 a264 1 The amount of time between postscreen(8) cache d269 1 a269 1 Persistent storage for the postscreen(8) server d274 1 a274 1 expired temporary whitelist entry before it is d278 1 a278 1 The amount of time that postscreen(8) will use the d283 1 a283 1 The amount of time that postscreen(8) will use the d287 1 a287 1 The amount of time that postscreen(8) will use the d291 2 a292 2 The amount of time that postscreen(8) will use the result from a successful "non_smtp_command" SMTP d296 1 a296 1 The amount of time that postscreen(8) will use the d302 2 a303 2 Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines d308 2 a309 3 How many simultaneous connections any remote SMTP client is allowed to have with the postscreen(8) daemon. d322 1 a322 1 vice from a real Postfix SMTP server process. d327 1 a327 1 service from a real Postfix SMTP server process. d331 3 a333 3 respond to a remote SMTP client command or to per- form a cache operation before it is terminated by a built-in watchdog timer. d352 2 a353 2 remote SMTP clients, but do not require that clients use TLS encryption. d356 3 a358 3 Mandatory TLS: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption. @ 1.1.1.1.6.2 log @sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments") @ text @d16 5 a20 8 The Postfix postscreen(8) server provides additional pro- tection against mail server overload. One postscreen(8) process handles multiple inbound SMTP connections, and decides which clients may talk to a Postfix SMTP server process. By keeping spambots away, postscreen(8) leaves more SMTP server processes available for legitimate clients, and delays the onset of server overload condi- tions. d23 6 a28 7 mail from end-user clients (MUAs). In a typical deploy- ment, postscreen(8) handles the MX service on TCP port 25, while MUA clients submit mail via the submission service on TCP port 587 which requires client authentication. Alternatively, a site could set up a dedicated, non- postscreen, "port 25" server that provides submission ser- vice and client authentication, but no MX service. d79 5 a83 4 If you need to make these services available on port 25, then do not enable the optional "after 220 server greet- ing" tests, and do not use DNSBLs that reject traffic from dial-up and residential networks. d85 2 a86 2 The optional "after 220 server greeting" tests involve postscreen(8)'s built-in SMTP protocol engine. When these d88 9 a96 10 rary whitelist, but it cannot not hand off the "live" con- nection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client connects again, postscreen(8) will allow the client to talk to a Postfix SMTP server process (provided that the whitelist status has not expired). postscreen(8) mitigates the impact of this limitation by giving the "after 220 server greeting" tests a long expiration time. a146 12 BEFORE-POSTSCREEN PROXY AGENT Available in Postfix version 2.10 and later: postscreen_upstream_proxy_protocol (empty) The name of the proxy protocol used by an optional before-postscreen proxy agent. postscreen_upstream_proxy_timeout (5s) The time limit for the proxy protocol specified with the postscreen_upstream_proxy_protocol parame- ter. d148 3 a150 3 This test is executed immediately after a remote SMTP client connects. If a client is permanently whitelisted, the client will be handed off immediately to a Postfix d158 2 a159 2 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the d163 8 a170 7 When postscreen(8) is configured to monitor all primary and backup MX addresses, it can refuse to whitelist clients that connect to a backup MX address only. For small sites, this requires configuring primary and backup MX addresses on the same MTA. Larger sites would have to share the postscreen(8) cache between primary and backup MTAs, which would introduce a common point of failure. @ 1.1.1.2 log @Import Postfix 2.9.5. Major changes since version 2.8.x: - Support for long, non-repeating, queue IDs (queue file names). The main benefit of non-repeating names is simpler logfile analysis. See the description of "enable_long_queue_ids" in postconf(5) for details. - Memcache client support, and support to share postscreen(8) and verify(8) caches via the proxymap server. Details about memcache support are in memcache_table(5) and MEMCACHE_README. - Gradual degradation: if a database is unavailable (can't open, most read or write errors) a Postfix daemon will log a warning and continue providing the services that don't depend on that table, instead of immediately terminating with a fatal error. To terminate immediately when a database file can't be opened, specify "daemon_table_open_error_is_fatal = yes". - Revised postconf(1) command. It warns about unused parameter name=value settings in main.cf or master.cf (likely mistakes), understands "dynamic" parameter names such as names that depend on the name of a master.cf entry (finally, "postconf -n" shows all parameter settings), and it can display main.cf and master.cf in a more user-friendly format (postconf -nf, postconf -Mf). - Read/write deadline support in the SMTP client and server to defend against application-level DOS attacks that very slowly write or read data one byte at a time. @ text @d25 1 a25 4 while MUA clients submit mail via the submission service, or via a "port 25" server that provides no MX service (i.e. a dedicated server that provides submission service on port 25). d138 1 a138 1 or 5XX postscreen(8) server response. d155 2 a156 2 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the a158 15 MAIL EXCHANGER POLICY TESTS When a remote SMTP client is not on the permanent access list, postscreen(8) can implement a number of whitelist tests before it grants the client a temporary whitelist status to talk to a Postfix SMTP server process. By listening on both primary and backup MX addresses, postscreen(8) can deny the temporary whitelist status to clients that connect only to backup MX hosts. postscreen_whitelist_interfaces (static:all) A list of local postscreen(8) server IP addresses where a non-whitelisted remote SMTP client can obtain postscreen(8)'s temporary whitelist status. d171 2 a172 2 The action that postscreen(8) takes when a remote SMTP client's combined DNSBL score is equal to or d188 2 a189 2 The inclusive lower bound for blocking a remote SMTP client, based on its combined DNSBL score as d193 3 a195 3 The action that postscreen(8) takes when a remote SMTP client speaks before its turn within the time specified with the postscreen_greet_wait parameter. d201 1 a201 1 attempt to confuse bad SMTP clients so that they d206 3 a208 3 an SMTP client to send a command before its turn, and for DNS blocklist lookup results to arrive (default: up to 2 seconds under stress, up to 6 d212 1 a212 1 The internal service that postscreen(8) hands off d216 1 a216 1 These tests are executed after the remote SMTP client d218 2 a219 2 all tests during this phase, it will receive a 4XX response to RCPT TO commands until the client hangs up. d224 3 a226 3 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded by carriage return. d229 1 a229 1 Enable "bare newline" SMTP protocol tests in the d233 1 a233 1 Disable the SMTP VRFY command in the postscreen(8) d241 1 a241 1 Require that a remote SMTP client sends HELO or d245 3 a247 3 The action that postscreen(8) takes when a remote SMTP client sends non-SMTP commands as specified with the postscreen_forbidden_commands parameter. d250 1 a250 1 Enable "non-SMTP command" tests in the d254 3 a256 4 The action that postscreen(8) takes when a remote SMTP client sends multiple commands instead of sending one command and waiting for the server to respond. d259 1 a259 1 Enable "pipelining" SMTP protocol tests in the d264 1 a264 1 The amount of time between postscreen(8) cache d269 1 a269 1 Persistent storage for the postscreen(8) server d274 1 a274 1 expired temporary whitelist entry before it is d278 1 a278 1 The amount of time that postscreen(8) will use the d283 1 a283 1 The amount of time that postscreen(8) will use the d287 1 a287 1 The amount of time that postscreen(8) will use the d291 2 a292 2 The amount of time that postscreen(8) will use the result from a successful "non_smtp_command" SMTP d296 1 a296 1 The amount of time that postscreen(8) will use the d302 2 a303 2 Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines d308 2 a309 3 How many simultaneous connections any remote SMTP client is allowed to have with the postscreen(8) daemon. d322 1 a322 1 vice from a real Postfix SMTP server process. d327 1 a327 1 service from a real Postfix SMTP server process. d331 3 a333 3 respond to a remote SMTP client command or to per- form a cache operation before it is terminated by a built-in watchdog timer. d352 2 a353 2 remote SMTP clients, but do not require that clients use TLS encryption. d356 3 a358 3 Mandatory TLS: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption. @ 1.1.1.3 log @Import Postfix 2.10.2. Major changes since version 2.9.* are: - Separation of relay policy (with smtpd_relay_restrictions) from spam policy (with smtpd_{client, helo, sender, recipient}_restrictions), which makes accidental open relay configuration less likely. The default is backwards compatible. - HAproxy load-balancer support for postscreen(8) and smtpd(8). The nginx proxy was already supported by Postfix 2.9 smtpd(8), using XCLIENT commands. - Support for the TLSv1 and TLSv2 protocols, as well as support to turn them off if needed for inter-operability. - Laptop-friendly configuration. By default, Postfix now uses UNIX-domain sockets instead of FIFOs, and thus avoids MTIME file system updates on an idle mail system. - Revised postconf(1) command. The "-x" option expands $name in a parameter value (both main.cf and master.cf); the "-o name=value" option overrides a main.cf parameter setting; and postconf(1) now warns about a $name that has no name=value setting. - Sendmail-style "socketmap" lookup tables. @ text @d16 5 a20 8 The Postfix postscreen(8) server provides additional pro- tection against mail server overload. One postscreen(8) process handles multiple inbound SMTP connections, and decides which clients may talk to a Postfix SMTP server process. By keeping spambots away, postscreen(8) leaves more SMTP server processes available for legitimate clients, and delays the onset of server overload condi- tions. d23 6 a28 7 mail from end-user clients (MUAs). In a typical deploy- ment, postscreen(8) handles the MX service on TCP port 25, while MUA clients submit mail via the submission service on TCP port 587 which requires client authentication. Alternatively, a site could set up a dedicated, non- postscreen, "port 25" server that provides submission ser- vice and client authentication, but no MX service. d79 5 a83 4 If you need to make these services available on port 25, then do not enable the optional "after 220 server greet- ing" tests, and do not use DNSBLs that reject traffic from dial-up and residential networks. d85 2 a86 2 The optional "after 220 server greeting" tests involve postscreen(8)'s built-in SMTP protocol engine. When these d88 9 a96 10 rary whitelist, but it cannot not hand off the "live" con- nection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client connects again, postscreen(8) will allow the client to talk to a Postfix SMTP server process (provided that the whitelist status has not expired). postscreen(8) mitigates the impact of this limitation by giving the "after 220 server greeting" tests a long expiration time. a146 12 BEFORE-POSTSCREEN PROXY AGENT Available in Postfix version 2.10 and later: postscreen_upstream_proxy_protocol (empty) The name of the proxy protocol used by an optional before-postscreen proxy agent. postscreen_upstream_proxy_timeout (5s) The time limit for the proxy protocol specified with the postscreen_upstream_proxy_protocol parame- ter. d148 3 a150 3 This test is executed immediately after a remote SMTP client connects. If a client is permanently whitelisted, the client will be handed off immediately to a Postfix d158 2 a159 2 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the d163 8 a170 7 When postscreen(8) is configured to monitor all primary and backup MX addresses, it can refuse to whitelist clients that connect to a backup MX address only. For small sites, this requires configuring primary and backup MX addresses on the same MTA. Larger sites would have to share the postscreen(8) cache between primary and backup MTAs, which would introduce a common point of failure. @ 1.1.1.3.2.1 log @Rebase. @ text @d16 40 a55 35 The Postfix postscreen(8) server provides additional protection against mail server overload. One postscreen(8) process handles multiple inbound SMTP connections, and decides which clients may talk to a Post- fix SMTP server process. By keeping spambots away, postscreen(8) leaves more SMTP server processes available for legitimate clients, and delays the onset of server overload conditions. This program should not be used on SMTP ports that receive mail from end-user clients (MUAs). In a typical deployment, postscreen(8) handles the MX service on TCP port 25, while MUA clients submit mail via the submission service on TCP port 587 which requires client authentica- tion. Alternatively, a site could set up a dedicated, non-postscreen, "port 25" server that provides submission service and client authenti- cation, but no MX service. postscreen(8) maintains a temporary whitelist for clients that have passed a number of tests. When an SMTP client IP address is whitelisted, postscreen(8) hands off the connection immediately to a Postfix SMTP server process. This minimizes the overhead for legitimate mail. By default, postscreen(8) logs statistics and hands off every connec- tion to a Postfix SMTP server process, while excluding clients in mynetworks from all tests (primarily, to avoid problems with non-stan- dard SMTP implementations in network appliances). This mode is useful for non-destructive testing. In a typical production setting, postscreen(8) is configured to reject mail from clients that fail one or more tests. postscreen(8) logs rejected mail with the client address, helo, sender and recipient information. postscreen(8) is not an SMTP proxy; this is intentional. The purpose is to keep spambots away from Postfix SMTP server processes, while min- imizing overhead for legitimate traffic. d58 3 a60 3 The postscreen(8) server is moderately security-sensitive. It talks to untrusted clients on the network. The process can be run chrooted at fixed low privilege. d81 20 a100 16 The postscreen(8) built-in SMTP protocol engine currently does not announce support for AUTH, XCLIENT or XFORWARD. If you need to make these services available on port 25, then do not enable the optional "after 220 server greeting" tests, and do not use DNSBLs that reject traffic from dial-up and residential networks. The optional "after 220 server greeting" tests involve postscreen(8)'s built-in SMTP protocol engine. When these tests succeed, postscreen(8) adds the client to the temporary whitelist, but it cannot not hand off the "live" connection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client connects again, postscreen(8) will allow the client to talk to a Post- fix SMTP server process (provided that the whitelist status has not expired). postscreen(8) mitigates the impact of this limitation by giving the "after 220 server greeting" tests a long expiration time. d103 14 a116 13 Changes to main.cf are not picked up automatically, as postscreen(8) processes may run for several hours. Use the command "postfix reload" after a configuration change. The text below provides only a parameter summary. See postconf(5) for more details including examples. NOTE: Some postscreen(8) parameters implement stress-dependent behav- ior. This is supported only when the default parameter value is stress-dependent (that is, it looks like ${stress?X}${stress:Y}, or it is the $name of an smtpd parameter with a stress-dependent default). Other parameters always evaluate as if the stress parameter value is the empty string. d120 2 a121 1 A mechanism to transform commands from remote SMTP clients. d123 14 a136 11 postscreen_discard_ehlo_keyword_address_maps ($smtpd_discard_ehlo_key- word_address_maps) Lookup tables, indexed by the remote SMTP client address, with case insensitive lists of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the EHLO response to a remote SMTP client. postscreen_discard_ehlo_keywords ($smtpd_discard_ehlo_keywords) A case insensitive list of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the EHLO response to a remote SMTP client. d140 1 a140 1 List of characters that are permitted in d144 2 a145 2 Optional information that is appended after a 4XX or 5XX postscreen(8) server response. d148 2 a149 2 Safety net to keep mail queued that would otherwise be returned to the sender. d155 2 a156 2 The name of the proxy protocol used by an optional before- postscreen proxy agent. d159 3 a161 2 The time limit for the proxy protocol specified with the postscreen_upstream_proxy_protocol parameter. d164 4 a167 3 This test is executed immediately after a remote SMTP client connects. If a client is permanently whitelisted, the client will be handed off immediately to a Postfix SMTP server process. d170 2 a171 1 Permanent white/blacklist for remote SMTP client IP addresses. d174 3 a176 3 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the postscreen_access_list parame- ter. d179 7 a185 6 When postscreen(8) is configured to monitor all primary and backup MX addresses, it can refuse to whitelist clients that connect to a backup MX address only. For small sites, this requires configuring primary and backup MX addresses on the same MTA. Larger sites would have to share the postscreen(8) cache between primary and backup MTAs, which would introduce a common point of failure. d188 10 a197 9 A list of local postscreen(8) server IP addresses where a non- whitelisted remote SMTP client can obtain postscreen(8)'s tempo- rary whitelist status. BEFORE 220 GREETING TESTS These tests are executed before the remote SMTP client receives the "220 servername" greeting. If no tests remain after the successful com- pletion of this phase, the client will be handed off immediately to a Postfix SMTP server process. d200 2 a201 1 The name of the dnsblog(8) service entry in master.cf. d204 5 a208 4 The action that postscreen(8) takes when a remote SMTP client's combined DNSBL score is equal to or greater than a threshold (as defined with the postscreen_dnsbl_sites and postscreen_dnsbl_threshold parameters). d211 4 a214 3 A mapping from actual DNSBL domain name which includes a secret password, to the DNSBL domain name that postscreen will reply with when it rejects mail. d217 2 a218 2 Optional list of DNS white/blacklist domains, filters and weight factors. d221 3 a223 3 The inclusive lower bound for blocking a remote SMTP client, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. d226 3 a228 3 The action that postscreen(8) takes when a remote SMTP client speaks before its turn within the time specified with the postscreen_greet_wait parameter. d231 5 a235 4 The text in the optional "220-text..." server response that postscreen(8) sends ahead of the real Postfix SMTP server's "220 text..." response, in an attempt to confuse bad SMTP clients so that they speak before their turn (pre-greet). d238 5 a242 4 The amount of time that postscreen(8) will wait for an SMTP client to send a command before its turn, and for DNS blocklist lookup results to arrive (default: up to 2 seconds under stress, up to 6 seconds otherwise). d245 2 a246 2 The internal service that postscreen(8) hands off allowed con- nections to. d248 7 a254 13 Available in Postfix version 2.11 and later: postscreen_dnsbl_whitelist_threshold (0) Allow a remote SMTP client to skip "before" and "after 220 greeting" protocol tests, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. AFTER 220 GREETING TESTS These tests are executed after the remote SMTP client receives the "220 servername" greeting. If a client passes all tests during this phase, it will receive a 4XX response to all RCPT TO commands. After the client reconnects, it will be allowed to talk directly to a Postfix SMTP server process. d257 3 a259 3 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded by carriage return. d262 2 a263 2 Enable "bare newline" SMTP protocol tests in the postscreen(8) server. d266 2 a267 1 Disable the SMTP VRFY command in the postscreen(8) daemon. d270 2 a271 2 List of commands that the postscreen(8) server considers in vio- lation of the SMTP protocol. d274 2 a275 2 Require that a remote SMTP client sends HELO or EHLO before com- mencing a MAIL transaction. d278 3 a280 3 The action that postscreen(8) takes when a remote SMTP client sends non-SMTP commands as specified with the postscreen_forbid- den_commands parameter. d283 2 a284 1 Enable "non-SMTP command" tests in the postscreen(8) server. d287 4 a290 3 The action that postscreen(8) takes when a remote SMTP client sends multiple commands instead of sending one command and wait- ing for the server to respond. d293 2 a294 2 Enable "pipelining" SMTP protocol tests in the postscreen(8) server. d298 2 a299 1 The amount of time between postscreen(8) cache cleanup runs. d301 4 a304 2 postscreen_cache_map (btree:$data_directory/postscreen_cache) Persistent storage for the postscreen(8) server decisions. d307 3 a309 2 The amount of time that postscreen(8) will cache an expired tem- porary whitelist entry before it is removed. d312 3 a314 2 The amount of time that postscreen(8) will use the result from a successful "bare newline" SMTP protocol test. d317 2 a318 2 The amount of time that postscreen(8) will use the result from a successful DNS blocklist test. d321 2 a322 2 The amount of time that postscreen(8) will use the result from a successful PREGREET test. d325 3 a327 2 The amount of time that postscreen(8) will use the result from a successful "non_smtp_command" SMTP protocol test. d330 3 a332 2 The amount of time that postscreen(8) will use the result from a successful "pipelining" SMTP protocol test. d336 9 a344 7 Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines are reconstructed. postscreen_client_connection_count_limit ($smtpd_client_connec- tion_count_limit) How many simultaneous connections any remote SMTP client is allowed to have with the postscreen(8) daemon. d347 3 a349 2 The limit on the total number of commands per SMTP session for postscreen(8)'s built-in SMTP protocol engine. d352 1 a352 1 The time limit to read an entire command line with d356 2 a357 2 The number of clients that can be waiting for service from a real Postfix SMTP server process. d360 3 a362 3 The number of non-whitelisted clients that can be waiting for a decision whether they will receive service from a real Postfix SMTP server process. d365 4 a368 3 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation before it is terminated by a built-in watchdog timer. d372 4 a375 3 The SMTP TLS security level for the postscreen(8) server; when a non-empty value is specified, this overrides the obsolete param- eters postscreen_use_tls and postscreen_enforce_tls. d378 2 a379 1 The name of the tlsproxy(8) service entry in master.cf. d382 2 a383 2 These parameters are supported for compatibility with smtpd(8) legacy parameters. d386 3 a388 2 Opportunistic TLS: announce STARTTLS support to remote SMTP clients, but do not require that clients use TLS encryption. d391 3 a393 2 Mandatory TLS: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption. d397 2 a398 2 The default location of the Postfix main.cf and master.cf con- figuration files. d401 2 a402 2 The maximal number of digits after the decimal point when log- ging sub-second delay values. d405 2 a406 1 The location of all postfix administrative commands. d409 3 a411 2 The maximum amount of time that an idle Postfix daemon process waits for an incoming connection before terminating voluntarily. d414 2 a415 1 The process ID of a Postfix command or daemon process. d418 2 a419 1 The process name of a Postfix command or daemon process. d425 3 a427 3 The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "post- fix/smtpd". d439 2 a440 1 The Secure Mailer license must be distributed with this software. d445 3 a447 2 Many ideas in postscreen(8) were explored in earlier work by Michael Tokarev, in OpenBSD spamd, and in MailChannels Traffic Control. @ 1.1.1.4 log @Import Postfix 2.11.1. The main changes since version 2.10.* are: - Support for PKI-less TLS server certificate verification with DANE (DNS-based Authentication of Named Entities) where the CA public key or the server certificate is identified via DNSSEC lookup. This requires a DNS resolver that validates DNSSEC replies. The problem with conventional PKI is that there are literally hundreds of organizations world-wide that can provide a certificate in anyone's name. DANE limits trust to the people who control the target DNS zone and its parent zones. - A new postscreen_dnsbl_whitelist_threshold feature to allow clients to skip postscreen tests based on their DNSBL score. This can eliminate email delays due to "after 220 greeting" protocol tests, which otherwise require that a client reconnects before it can deliver mail. Some providers such as Google don't retry from the same IP address, and that can result in large email delivery delays. - The recipient_delimiter feature now supports different delimiters, for example both "+" and "-". As before, this implementation recognizes exactly one delimiter character per email address, and exactly one address extension per email address. - Advanced master.cf query/update support to access service attributes as "name = value" pairs. For example to turn off chroot on all services use "postconf -F '*/*/chroot = n'", and to change/add a "-o name=value" setting use "postconf -P 'smtp/inet/name = value'". This was developed primarily to allow automated tools to manage Postfix systems without having to parse Postfix configuration files. @ text @d16 40 a55 35 The Postfix postscreen(8) server provides additional protection against mail server overload. One postscreen(8) process handles multiple inbound SMTP connections, and decides which clients may talk to a Post- fix SMTP server process. By keeping spambots away, postscreen(8) leaves more SMTP server processes available for legitimate clients, and delays the onset of server overload conditions. This program should not be used on SMTP ports that receive mail from end-user clients (MUAs). In a typical deployment, postscreen(8) handles the MX service on TCP port 25, while MUA clients submit mail via the submission service on TCP port 587 which requires client authentica- tion. Alternatively, a site could set up a dedicated, non-postscreen, "port 25" server that provides submission service and client authenti- cation, but no MX service. postscreen(8) maintains a temporary whitelist for clients that have passed a number of tests. When an SMTP client IP address is whitelisted, postscreen(8) hands off the connection immediately to a Postfix SMTP server process. This minimizes the overhead for legitimate mail. By default, postscreen(8) logs statistics and hands off every connec- tion to a Postfix SMTP server process, while excluding clients in mynetworks from all tests (primarily, to avoid problems with non-stan- dard SMTP implementations in network appliances). This mode is useful for non-destructive testing. In a typical production setting, postscreen(8) is configured to reject mail from clients that fail one or more tests. postscreen(8) logs rejected mail with the client address, helo, sender and recipient information. postscreen(8) is not an SMTP proxy; this is intentional. The purpose is to keep spambots away from Postfix SMTP server processes, while min- imizing overhead for legitimate traffic. d58 3 a60 3 The postscreen(8) server is moderately security-sensitive. It talks to untrusted clients on the network. The process can be run chrooted at fixed low privilege. d81 20 a100 16 The postscreen(8) built-in SMTP protocol engine currently does not announce support for AUTH, XCLIENT or XFORWARD. If you need to make these services available on port 25, then do not enable the optional "after 220 server greeting" tests, and do not use DNSBLs that reject traffic from dial-up and residential networks. The optional "after 220 server greeting" tests involve postscreen(8)'s built-in SMTP protocol engine. When these tests succeed, postscreen(8) adds the client to the temporary whitelist, but it cannot not hand off the "live" connection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client connects again, postscreen(8) will allow the client to talk to a Post- fix SMTP server process (provided that the whitelist status has not expired). postscreen(8) mitigates the impact of this limitation by giving the "after 220 server greeting" tests a long expiration time. d103 14 a116 13 Changes to main.cf are not picked up automatically, as postscreen(8) processes may run for several hours. Use the command "postfix reload" after a configuration change. The text below provides only a parameter summary. See postconf(5) for more details including examples. NOTE: Some postscreen(8) parameters implement stress-dependent behav- ior. This is supported only when the default parameter value is stress-dependent (that is, it looks like ${stress?X}${stress:Y}, or it is the $name of an smtpd parameter with a stress-dependent default). Other parameters always evaluate as if the stress parameter value is the empty string. d120 2 a121 1 A mechanism to transform commands from remote SMTP clients. d123 14 a136 11 postscreen_discard_ehlo_keyword_address_maps ($smtpd_discard_ehlo_key- word_address_maps) Lookup tables, indexed by the remote SMTP client address, with case insensitive lists of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the EHLO response to a remote SMTP client. postscreen_discard_ehlo_keywords ($smtpd_discard_ehlo_keywords) A case insensitive list of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the EHLO response to a remote SMTP client. d140 1 a140 1 List of characters that are permitted in d144 2 a145 2 Optional information that is appended after a 4XX or 5XX postscreen(8) server response. d148 2 a149 2 Safety net to keep mail queued that would otherwise be returned to the sender. d155 2 a156 2 The name of the proxy protocol used by an optional before- postscreen proxy agent. d159 3 a161 2 The time limit for the proxy protocol specified with the postscreen_upstream_proxy_protocol parameter. d164 4 a167 3 This test is executed immediately after a remote SMTP client connects. If a client is permanently whitelisted, the client will be handed off immediately to a Postfix SMTP server process. d170 2 a171 1 Permanent white/blacklist for remote SMTP client IP addresses. d174 3 a176 3 The action that postscreen(8) takes when a remote SMTP client is permanently blacklisted with the postscreen_access_list parame- ter. d179 7 a185 6 When postscreen(8) is configured to monitor all primary and backup MX addresses, it can refuse to whitelist clients that connect to a backup MX address only. For small sites, this requires configuring primary and backup MX addresses on the same MTA. Larger sites would have to share the postscreen(8) cache between primary and backup MTAs, which would introduce a common point of failure. d188 10 a197 9 A list of local postscreen(8) server IP addresses where a non- whitelisted remote SMTP client can obtain postscreen(8)'s tempo- rary whitelist status. BEFORE 220 GREETING TESTS These tests are executed before the remote SMTP client receives the "220 servername" greeting. If no tests remain after the successful com- pletion of this phase, the client will be handed off immediately to a Postfix SMTP server process. d200 2 a201 1 The name of the dnsblog(8) service entry in master.cf. d204 5 a208 4 The action that postscreen(8) takes when a remote SMTP client's combined DNSBL score is equal to or greater than a threshold (as defined with the postscreen_dnsbl_sites and postscreen_dnsbl_threshold parameters). d211 4 a214 3 A mapping from actual DNSBL domain name which includes a secret password, to the DNSBL domain name that postscreen will reply with when it rejects mail. d217 2 a218 2 Optional list of DNS white/blacklist domains, filters and weight factors. d221 3 a223 3 The inclusive lower bound for blocking a remote SMTP client, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. d226 3 a228 3 The action that postscreen(8) takes when a remote SMTP client speaks before its turn within the time specified with the postscreen_greet_wait parameter. d231 5 a235 4 The text in the optional "220-text..." server response that postscreen(8) sends ahead of the real Postfix SMTP server's "220 text..." response, in an attempt to confuse bad SMTP clients so that they speak before their turn (pre-greet). d238 5 a242 4 The amount of time that postscreen(8) will wait for an SMTP client to send a command before its turn, and for DNS blocklist lookup results to arrive (default: up to 2 seconds under stress, up to 6 seconds otherwise). d245 2 a246 2 The internal service that postscreen(8) hands off allowed con- nections to. d248 7 a254 13 Available in Postfix version 2.11 and later: postscreen_dnsbl_whitelist_threshold (0) Allow a remote SMTP client to skip "before" and "after 220 greeting" protocol tests, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. AFTER 220 GREETING TESTS These tests are executed after the remote SMTP client receives the "220 servername" greeting. If a client passes all tests during this phase, it will receive a 4XX response to all RCPT TO commands. After the client reconnects, it will be allowed to talk directly to a Postfix SMTP server process. d257 3 a259 3 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded by carriage return. d262 2 a263 2 Enable "bare newline" SMTP protocol tests in the postscreen(8) server. d266 2 a267 1 Disable the SMTP VRFY command in the postscreen(8) daemon. d270 2 a271 2 List of commands that the postscreen(8) server considers in vio- lation of the SMTP protocol. d274 2 a275 2 Require that a remote SMTP client sends HELO or EHLO before com- mencing a MAIL transaction. d278 3 a280 3 The action that postscreen(8) takes when a remote SMTP client sends non-SMTP commands as specified with the postscreen_forbid- den_commands parameter. d283 2 a284 1 Enable "non-SMTP command" tests in the postscreen(8) server. d287 4 a290 3 The action that postscreen(8) takes when a remote SMTP client sends multiple commands instead of sending one command and wait- ing for the server to respond. d293 2 a294 2 Enable "pipelining" SMTP protocol tests in the postscreen(8) server. d298 2 a299 1 The amount of time between postscreen(8) cache cleanup runs. d301 4 a304 2 postscreen_cache_map (btree:$data_directory/postscreen_cache) Persistent storage for the postscreen(8) server decisions. d307 3 a309 2 The amount of time that postscreen(8) will cache an expired tem- porary whitelist entry before it is removed. d312 3 a314 2 The amount of time that postscreen(8) will use the result from a successful "bare newline" SMTP protocol test. d317 2 a318 2 The amount of time that postscreen(8) will use the result from a successful DNS blocklist test. d321 2 a322 2 The amount of time that postscreen(8) will use the result from a successful PREGREET test. d325 3 a327 2 The amount of time that postscreen(8) will use the result from a successful "non_smtp_command" SMTP protocol test. d330 3 a332 2 The amount of time that postscreen(8) will use the result from a successful "pipelining" SMTP protocol test. d336 9 a344 7 Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines are reconstructed. postscreen_client_connection_count_limit ($smtpd_client_connec- tion_count_limit) How many simultaneous connections any remote SMTP client is allowed to have with the postscreen(8) daemon. d347 3 a349 2 The limit on the total number of commands per SMTP session for postscreen(8)'s built-in SMTP protocol engine. d352 1 a352 1 The time limit to read an entire command line with d356 2 a357 2 The number of clients that can be waiting for service from a real Postfix SMTP server process. d360 3 a362 3 The number of non-whitelisted clients that can be waiting for a decision whether they will receive service from a real Postfix SMTP server process. d365 4 a368 3 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation before it is terminated by a built-in watchdog timer. d372 4 a375 3 The SMTP TLS security level for the postscreen(8) server; when a non-empty value is specified, this overrides the obsolete param- eters postscreen_use_tls and postscreen_enforce_tls. d378 2 a379 1 The name of the tlsproxy(8) service entry in master.cf. d382 2 a383 2 These parameters are supported for compatibility with smtpd(8) legacy parameters. d386 3 a388 2 Opportunistic TLS: announce STARTTLS support to remote SMTP clients, but do not require that clients use TLS encryption. d391 3 a393 2 Mandatory TLS: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption. d397 2 a398 2 The default location of the Postfix main.cf and master.cf con- figuration files. d401 2 a402 2 The maximal number of digits after the decimal point when log- ging sub-second delay values. d405 2 a406 1 The location of all postfix administrative commands. d409 3 a411 2 The maximum amount of time that an idle Postfix daemon process waits for an incoming connection before terminating voluntarily. d414 2 a415 1 The process ID of a Postfix command or daemon process. d418 2 a419 1 The process name of a Postfix command or daemon process. d425 3 a427 3 The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "post- fix/smtpd". d439 2 a440 1 The Secure Mailer license must be distributed with this software. d445 3 a447 2 Many ideas in postscreen(8) were explored in earlier work by Michael Tokarev, in OpenBSD spamd, and in MailChannels Traffic Control. @ 1.1.1.4.10.1 log @Sync with HEAD @ text @d37 5 a41 5 By default, postscreen(8) logs statistics and hands off each connection to a Postfix SMTP server process, while excluding clients in mynetworks from all tests (primarily, to avoid problems with non-standard SMTP implementations in network appliances). This default mode blocks no clients, and is useful for non-destructive testing. d84 4 a87 4 adds the client to the temporary whitelist, but it cannot hand off the "live" connection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client d103 2 a104 2 stress-dependent (that is, it looks like ${stress?{X}:{Y}}, or it is the $name of an smtpd parameter with a stress-dependent default). a123 5 Available in Postfix version 3.1 and later: dns_ncache_ttl_fix_enable (no) Enable a workaround for future libc incompatibility. d141 2 a142 2 The name of the proxy protocol used by an optional before-postscreen proxy agent. d170 3 a172 3 A list of local postscreen(8) server IP addresses where a non-whitelisted remote SMTP client can obtain postscreen(8)'s temporary whitelist status. d214 1 a214 1 postscreen_greet_wait (normal: 6s, overload: 2s) a230 5 Available in Postfix version 3.0 and later: postscreen_dnsbl_timeout (10s) The time limit for DNSBL or DNSWL lookups. d290 3 a292 10 postscreen_dnsbl_max_ttl (${postscreen_dnsbl_ttl?{$postscreen_dnsbl_ttl}:{1}}h) The maximum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a client IP address is required to pass that test again. postscreen_dnsbl_min_ttl (60s) The minimum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a client IP address is required to pass that test again. d308 1 a308 1 Upon input, long lines are chopped up into pieces of at most d313 1 a313 1 How many simultaneous connections any remote SMTP client is d317 1 a317 1 The limit on the total number of commands per SMTP session for d320 2 a321 2 postscreen_command_time_limit (normal: 300s, overload: 10s) The time limit to read an entire command line with d325 1 a325 1 The number of clients that can be waiting for service from a d329 2 a330 2 The number of non-whitelisted clients that can be waiting for a decision whether they will receive service from a real Postfix d334 2 a335 2 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation d348 1 a348 1 These parameters are supported for compatibility with smtpd(8) legacy d352 1 a352 1 Opportunistic TLS: announce STARTTLS support to remote SMTP d361 1 a361 1 The default location of the Postfix main.cf and master.cf con- d365 1 a365 1 The maximal number of digits after the decimal point when log- d372 1 a372 1 The maximum amount of time that an idle Postfix daemon process d385 2 a386 2 The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "post- d404 1 a404 1 Many ideas in postscreen(8) were explored in earlier work by Michael a412 5 Wietse Venema Google, Inc. 111 8th Avenue New York, NY 10011, USA @ 1.1.1.4.6.1 log @Sync with HEAD @ text @d37 5 a41 5 By default, postscreen(8) logs statistics and hands off each connection to a Postfix SMTP server process, while excluding clients in mynetworks from all tests (primarily, to avoid problems with non-standard SMTP implementations in network appliances). This default mode blocks no clients, and is useful for non-destructive testing. d84 4 a87 4 adds the client to the temporary whitelist, but it cannot hand off the "live" connection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client d103 2 a104 2 stress-dependent (that is, it looks like ${stress?{X}:{Y}}, or it is the $name of an smtpd parameter with a stress-dependent default). a123 5 Available in Postfix version 3.1 and later: dns_ncache_ttl_fix_enable (no) Enable a workaround for future libc incompatibility. d141 2 a142 2 The name of the proxy protocol used by an optional before-postscreen proxy agent. d170 3 a172 3 A list of local postscreen(8) server IP addresses where a non-whitelisted remote SMTP client can obtain postscreen(8)'s temporary whitelist status. d214 1 a214 1 postscreen_greet_wait (normal: 6s, overload: 2s) a230 5 Available in Postfix version 3.0 and later: postscreen_dnsbl_timeout (10s) The time limit for DNSBL or DNSWL lookups. d290 3 a292 10 postscreen_dnsbl_max_ttl (${postscreen_dnsbl_ttl?{$postscreen_dnsbl_ttl}:{1}}h) The maximum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a client IP address is required to pass that test again. postscreen_dnsbl_min_ttl (60s) The minimum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a client IP address is required to pass that test again. d308 1 a308 1 Upon input, long lines are chopped up into pieces of at most d313 1 a313 1 How many simultaneous connections any remote SMTP client is d317 1 a317 1 The limit on the total number of commands per SMTP session for d320 2 a321 2 postscreen_command_time_limit (normal: 300s, overload: 10s) The time limit to read an entire command line with d325 1 a325 1 The number of clients that can be waiting for service from a d329 2 a330 2 The number of non-whitelisted clients that can be waiting for a decision whether they will receive service from a real Postfix d334 2 a335 2 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation d348 1 a348 1 These parameters are supported for compatibility with smtpd(8) legacy d352 1 a352 1 Opportunistic TLS: announce STARTTLS support to remote SMTP d361 1 a361 1 The default location of the Postfix main.cf and master.cf con- d365 1 a365 1 The maximal number of digits after the decimal point when log- d372 1 a372 1 The maximum amount of time that an idle Postfix daemon process d385 2 a386 2 The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "post- d404 1 a404 1 Many ideas in postscreen(8) were explored in earlier work by Michael a412 5 Wietse Venema Google, Inc. 111 8th Avenue New York, NY 10011, USA @ 1.1.1.5 log @The stable Postfix release is called postfix-3.0.x where 3=major release number, 0=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.1-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 2.10 or earlier, read RELEASE_NOTES-2.11 before proceeding. Notes for distribution maintainers ---------------------------------- * New backwards-compatibility safety net. With NEW Postfix installs, you MUST install a main.cf file with the setting "compatibility_level = 2". See conf/main.cf for an example. With UPGRADES of existing Postfix systems, you MUST NOT change the main.cf compatibility_level setting, nor add this setting if it does not exist. Several Postfix default settings have changed with Postfix 3.0. To avoid massive frustration with existing Postfix installations, Postfix 3.0 comes with a safety net that forces Postfix to keep running with backwards-compatible main.cf and master.cf default settings. This safety net depends on the main.cf compatibility_level setting (default: 0). Details are in COMPATIBILITY_README. * New Postfix build system. The Postfix build/install procedure has changed to support Postfix dynamically-linked libraries and database plugins. These must not be "shared" with non-Postfix programs, and therefore must not be installed in a public directory. To avoid massive frustration due to broken patches, PLEASE BUILD POSTFIX FIRST WITHOUT APPLYING ANY PATCHES. Follow the INSTALL instructions (see "Building with Postfix dynamically-linked libraries and database plugins"), and see how things work and what the dynamically-linked libraries, database plugin, and configuration files look like. Then, go ahead and perform your platform-specific customizations. The INSTALL section "Tips for distribution maintainers" has further suggestions. Major changes - critical ------------------------ [Incompat 20140714] After upgrading Postfix, "postfix reload" (or start/stop) is required. Several Postfix-internal protocols have been extended to support SMTPUTF8. Failure to reload or restart will result in mail staying queued, while Postfix daemons log warning messages about unexpected attributes. Major changes - default settings -------------------------------- [Incompat 20141009] The default settings have changed for relay_domains (new: empty, old: $mydestination) and mynetworks_style (new: host, old: subnet). However the backwards-compatibility safety net will prevent these changes from taking effect, giving the system administrator the option to make an old default setting permanent in main.cf or to adopt the new default setting, before turning off backwards compatibility. See COMPATIBILITY_README for details. [Incompat 20141001] A new backwards-compatibility safety net forces Postfix to run with backwards-compatible main.cf and master.cf default settings after an upgrade to a newer but incompatible Postfix version. See COMPATIBILITY_README for details. While the backwards-compatible default settings are in effect, Postfix logs what services or what email would be affected by the incompatible change. Based on this the administrator can make some backwards-compatibility settings permanent in main.cf or master.cf, before turning off backwards compatibility. See postconf.5.html#compatibility_level for details. [Incompat 20141001] The default settings have changed for append_dot_mydomain (new: no. old: yes), master.cf chroot (new: n, old: y), and smtputf8 (new: yes, old: no). Major changes - access control ------------------------------ [Feature 20141119] Support for BCC actions in header/body_checks and milter_header_checks. There is no limit on the number of BCC actions that may be specified, other than the implicit limit due to finite storage. BCC support will not be implemented in Postfix delivery agent header/body_checks. It works in the same way as always_bcc and sender/recipient_bcc_maps: there can be only one address per action, recipients are added with the NOTIFY=NONE delivery status notification option, and duplicate recipients are ignored (with the same delivery status notification options). [Incompat 20141009] The default settings have changed for relay_domains (new: empty, old: $mydestination) and mynetworks_style (new: host, old: subnet). However the backwards-compatibility safety net will prevent these changes from taking effect, giving the system administrator the option to make an old default setting permanent in main.cf or to adopt the new default setting, before turning off backwards compatibility. See COMPATIBILITY_README for details. [Feature 20140618] New INFO action in access(5) tables, for consistency with header/body_checks. [Feature 20140620] New check_xxx_a_access (for xxx in client, reverse_client, helo, sender, recipient) implements access control on all A and AAAA IP addresses for respectively the client hostname, helo parameter, sender domain or recipient domain. This complements the existing check_xxx_mx_access and check_xxx_ns_access features. Major changes - address rewriting --------------------------------- [Incompat 20141001] The default settings have changed for append_dot_mydomain (new: no. old: yes), master.cf chroot (new: n, old: y), and smtputf8 (new: yes, old: no). Major changes - address verification ------------------------------------ [Feature 20141227] The new smtp_address_verify_target parameter (default: rcpt) specifies what protocol stage decides if a recipient is valid. Specify "data" for servers that reject invalid recipients in response to the DATA command. Major changes - database support -------------------------------- [Feature 20140512] Support for Berkeley DB version 6. [Feature 20140618] The "randmap" lookup table performs random selection. This may be used to implement load balancing, for example: /etc/postfix/transport: # Deliver my own domain as usual. example.com : .example.com : /etc/postfix/main.cf: transport_maps = # Deliver my own domain as usual. hash:/etc/postfix/transport # Deliver other domains via randomly-selected relayhosts randmap:{smtp:smtp0.example.com, smtp:smtp1.example.com} A variant of this can randomly select SMTP clients with different smtp_bind_address settings. To implement different weights, specify lookup results multiple times. For example, to choose smtp:smtp1.example.com twice as often as smtp:smtp0.example.com, specify smtp:smtp1.example.com twice. A future version may support randmap:/path/to/file to load a list of results from file. [Feature 20140618] As the name suggests, the "pipemap" table implements a pipeline of lookup tables. The name of the table specifies the pipeline as a sequence of tables. For example, the following prevents SMTP mail to system accounts that have "nologin" as their login shell: /etc/postfix/main.cf: local_recipient_maps = pipemap:{unix:passwd.byname, pcre:/etc/postfix/no-nologin.pcre} alias_maps /etc/postfix/no-nologin.pcre: !/nologin/ whatever Each "pipemap:" query is given to the first table. Each table lookup result becomes the query for the next table in the pipeline, and the last table produces the final result. When any table lookup produces no result, the entire pipeline produces no result. A future version may support pipemap:/path/to/file to load a list of lookup tables from file. [Feature 20140924] Support for unionmap, with the same syntax as pipemap. This sends a query to all tables, and concatenates non-empty results, separated by comma. [Feature 20131121] The "static" lookup table now supports whitespace when invoked as "static:{ text with whitespace }", so that it can be used, for example, at the end of smtpd_mumble_restrictions as "check_mumble_access static:{reject text...}". [Feature 20141126] "inline:{key=value, { key = text with comma/space}}" avoids the need to create a database for just a few entries. Major changes - delivery status notifications --------------------------------------------- [Feature 20140321] Delivery status filter support, to replace the delivery status codes and explanatory text of successful or unsuccessful deliveries by Postfix mail delivery agents. This was originally implemented for sites that want to turn certain soft delivery errors into hard delivery errors, but it can also be used to censor out information from delivery confirmation reports. This feature is implemented as a filter that replaces the three-number enhanced status code and descriptive text in Postfix delivery agent success, bounce, or defer messages. Note: this will not override "soft_bounce=yes", and this will not change a successful delivery status into an unsuccessful status or vice versa. The first example turns specific soft TLS errors into hard errors, by overriding the first number in the enhanced status code. /etc/postfix/main.cf: smtp_delivery_status_filter = pcre:/etc/postfix/smtp_dsn_filter /etc/postfix/smtp_dsn_filter: /^4(\.\d+\.\d+ TLS is required, but host \S+ refused to start TLS: .+)/ 5$1 /^4(\.\d+\.\d+ TLS is required, but was not offered by host .+)/ 5$1 The second example removes the destination command name and file name from local(8) successful delivery reports, so that they will not be reported when a sender requests confirmation of delivery. /etc/postfix/main.cf: local_delivery_status_filter = pcre:/etc/postfix/local_dsn_filter /etc/postfix/local_dsn_filter: /^(2\S+ delivered to file).+/ $1 /^(2\S+ delivered to command).+/ $1 This feature is supported in the lmtp(8), local(8), pipe(8), smtp(8) and virtual(8) delivery agents. That is, all delivery agents that actually deliver mail. It will not be implemented in the error and retry pseudo-delivery agents. The new main.cf parameters and default values are: default_delivery_status_filter = lmtp_delivery_status_filter = $default_delivery_status_filter local_delivery_status_filter = $default_delivery_status_filter pipe_delivery_status_filter = $default_delivery_status_filter smtp_delivery_status_filter = $default_delivery_status_filter virtual_delivery_status_filter = $default_delivery_status_filter See the postconf(5) manpage for more details. [Incompat 20140618] The pipe(8) delivery agent will now log a limited amount of command output upon successful delivery, and will report that output in "SUCCESS" delivery status reports. This is another good reason to disable inbound DSN requests at the Internet perimeter. [Feature 20140907] With "confirm_delay_cleared = yes", Postfix informs the sender when delayed mail leaves the queue (this is in addition to the delay_warning_time feature that warns when mail is still queued). This feature is disabled by default, because it can result in a sudden burst of notifications when the queue drains at the end of a prolonged network outage. Major changes - dns ------------------- [Feature 20141128] Support for DNS server reply filters in the Postfix SMTP/LMTP client and SMTP server. This helps to work around mail delivery problems with sites that have incorrect DNS information. Note: this has no effect on the implicit DNS lookups that are made by nsswitch.conf or equivalent mechanisms. This feature renders each lookup result as one line of text in standard zone-file format as shown below. The class field is always "IN", the preference field exists only for MX records, the names of hosts, domains, etc. end in ".", and those names are in ASCII form (xn--mumble form for internationalized domain names). name ttl class type preference value --------------------------------------------------------- postfix.org. 86400 IN MX 10 mail.cloud9.net. Typically, one would match this text with a regexp: or pcre: table. When a match is found, the table lookup result specifies an action. By default, the table query and the action name are case-insensitive. Currently, only the IGNORE action is implemented. For safety reasons, Postfix logs a warning or defers mail delivery when a DNS reply filter removes all lookup results from a successful query. The Postfix SMTP/LMTP client uses the smtp_dns_reply_filter and lmtp_dns_reply_filter features only for Postfix SMTP client lookups of MX, A, and AAAAA records to locate a remote SMTP or LMTP server, including lookups that implement the features reject_unverified_sender and reject_unverified_recipient. The filters are not used for lookups made through nsswitch.conf and similar mechanisms. The Postfix SMTP server uses the smtpd_dns_reply_filter feature only for Postfix SMTP server lookups of MX, A, AAAAA, and TXT records to implement the features reject_unknown_helo_hostname, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_rbl_*, and reject_rhsbl_*. The filter is not used for lookups made through nsswitch.conf and similar mechanisms, such as lookups of the remote SMTP client name. [Feature 20141126] Nullmx support (MX records with a null hostname). This change affects error messages only. The Postfix SMTP client already bounced mail for such domains, and the Postfix SMTP server already rejected such domains with reject_unknown_sender/recipient_domain. This feature introduces a new SMTP server configuration parameter nullmx_reject_code (default: 556). Major changes - dynamic linking ------------------------------- [Feature 20140530] Support to build Postfix with Postfix dynamically-linked libraries, and with dynamically-loadable database clients. These MUST NOT be used by non-Postfix programs. Postfix dynamically-linked libraries introduce minor runtime overhead and result in smaller Postfix executable files. Dynamically-loadable database clients are useful when you distribute or install pre-compiled packages. Postfix 3.0 supports dynamic loading for CDB, LDAP, LMDB, MYSQL, PCRE, PGSQL, SDBM, and SQLITE database clients. This implementation is based on Debian code by LaMont Jones, initially ported by Viktor Dukhovni. Currently, support exists for recent versions of Linux, FreeBSD, MacOS X, and for the ancient Solaris 9. To support Postfix dynamically-linked libraries and dynamically-loadable database clients, the Postfix build procedure had to be changed (specifically, the files makedefs and Makefile.in, and the files postfix-install and post-install that install or update Postfix). [Incompat 20140530] The Postfix 3.0 build procedure expects that you specify database library dependencies with variables named AUXLIBS_CDB, AUXLIBS_LDAP, etc. With Postfix 3.0 and later, the old AUXLIBS variable still supports building a statically-loaded CDB etc. database client, but only the new AUXLIBS_CDB etc. variables support building a dynamically-loaded or statically-loaded CDB etc. database client. See CDB_README, LDAP_README, etc. for details. Failure to follow this advice will defeat the purpose of dynamic database client loading. Every Postfix executable file will have database library dependencies. And that was exactly what dynamic database client loading was meant to avoid. Major changes - future proofing ------------------------------- [Cleanup 20141224] The changes described here have no visible effect on Postfix behavior, but they make Postfix code easier to maintain, and therefore make new functionality easier to add. * Compile-time argument typechecks of non-printf/scanf-like variadic function argument lists. * Deprecating the use of "char *" for non-text purposes such as memory allocation and pointers to application context for call-back functions. This dates from long-past days before void * became universally available. * Replace integer types for counters and sizes with size_t or ssize_t equivalents. This eliminates some wasteful 64<->32bit conversions on 64-bit systems. Major changes - installation pathnames -------------------------------------- [Incompat 20140625] For compliance with file system policies, some non-executable files have been moved from $daemon_directory to the directory specified with the new meta_directory configuration parameter which has the same default value as the config_directory parameter. This change affects non-executable files that are shared between multiple Postfix instances such as postfix-files, dynamicmaps.cf, and multi-instance template files. For backwards compatibility with Postfix 2.6 .. 2.11, specify "meta_directory = $daemon_directory" in main.cf before installing or upgrading Postfix, or specify "meta_directory = /path/name" on the "make makefiles", "make install" or "make upgrade" command line. Major changes - milter ---------------------- [Feature 20140928] Support for per-Milter settings that override main.cf parameters. For details see the section "Advanced policy client configuration" in the SMTPD_POLICY_README document. Here is an example that uses both old and new syntax: smtpd_milters = { inet:127.0.0.1:port1, default_action=accept, ... }, inet:127.0.0.1:port2, ... The supported attribute names are: command_timeout, connect_timeout, content_timeout, default_action, and protocol. These have the same names as the corresponding main.cf parameters, without the "milter_" prefix. The per-milter settings are specified as attribute=value pairs separated by comma or space; specify { name = value } to allow spaces around the "=" or within an attribute value. [Feature 20141018] DMARC compatibility: when a Milter inserts a header ABOVE Postfix's own Received: header, Postfix no longer exposes its own Received: header to Milters (violating protocol) and Postfix no longer hides the Milter-inserted header from Milters (wtf). Major changes - parameter syntax -------------------------------- [Feature 20140921] In preparation for configurable mail headers and logging, new main.cf support for if-then-else expressions: ${name?{text1}:{text2}} and for logical expressions: ${{text1}=={text2}?{text3}:{text4}} ${{text1}!={text2}?{text3}:{text4}} Whitespace before and after {text} is ignored. This can help to make complex expressions more readable. See the postconf(5) manpage for further details. [Feature 20140928] Support for whitespace in daemon command-line arguments. For details, see the "Command name + arguments" section in the master(5) manpage. Example: smtpd -o { parameter = value containing whitespace } ... The { ... } form is also available for non-option command-line arguments in master.cf, for example: pipe ... argv=command { argument containing whitespace } ... In both cases, whitespace immediately after "{" and before "}" is ignored. [Feature 20141005] Postfix import_environment and export_environment now allow "{ name=value }" to protect whitespace in attribute values. [Feature 20141006] The new message_drop_header parameter replaces a hard-coded table that specifies what message headers the cleanup daemon will remove. The list of supported header names covers RFC 5321, 5322, MIME RFCs, and some historical names. Major changes - pipe daemon --------------------------- [Incompat 20140618] The pipe(8) delivery agent will now log a limited amount of command output upon successful delivery, and will report that output in "SUCCESS" delivery status reports. This is another good reason to disable inbound DSN requests at the Internet perimeter. Major changes - policy client ----------------------------- [Feature 20140703] This release introduces three new configuration parameters that control error recovery for failed SMTPD policy requests. * smtpd_policy_service_default_action (default: 451 4.3.5 Server configuration problem): The default action when an SMTPD policy service request fails. * smtpd_policy_service_try_limit (default: 2): The maximal number of attempts to send an SMTPD policy service request before giving up. This must be a number greater than zero. * smtpd_policy_service_retry_delay (default: 1s): The delay between attempts to resend a failed SMTPD policy service request. This must be a number greater than zero. See postconf(5) for details and limitations. [Feature 20140928] Support for per-policy service settings that override main.cf parameters. For details see the section "Different settings for different Milter applications" in the MILTER_README document. Here is an example that uses both old and new syntax: smtpd_recipient_restrictions = ... check_policy_service { inet:127.0.0.1:port3, default_action=DUNNO } check_policy_service inet:127.0.0.1:port4 ... The per-policy service settings are specified as attribute=value pairs separated by comma or space; specify { name = value } to allow spaces around the "=" or within an attribute value. The supported attribute names are: default_action, max_idle, max_ttl, request_limit, retry_delay, timeout, try_limit. These have the same names as the corresponding main.cf parameters, without the "smtpd_policy_service_" prefix. [Feature 20140505] A client port attribute was added to the policy delegation protocol. [Feature 20140630] New smtpd_policy_service_request_limit feature to limit the number of requests per Postfix SMTP server policy connection. This is a workaround to avoid error-recovery delays with policy servers that cannot maintain a persistent connection. Major changes - position-independent executables ------------------------------------------------ [Feature 20150205] Preliminary support for building position-independent executables (PIE), tested on Fedora Core 20, Ubuntu 14.04, FreeBSD 9 and 10, and NetBSD 6. Specify: $ make makefiles pie=yes ...other arguments... On some systems, PIE is used by the ASLR exploit mitigation technique (ASLR = Address-Space Layout Randomization). Whether specifying "pie=yes" has any effect at all depends on the compiler. Reportedly, some compilers always produce PIE executables. Major changes - postscreen -------------------------- [Feature 20140501] Configurable time limit (postscreen_dnsbl_timeout) for DNSBL or DNSWL lookups. This is separate from the timeouts in the dnsblog(8) daemon which are controlled by system resolver(3) routines. Major changes - session fingerprint ----------------------------------- [Feature 20140801] The Postfix SMTP server now logs at the end of a session how many times an SMTP command was successfully invoked, followed by the total number of invocations if some invocations were unsuccessful. This logging will enough to diagnose many problems without using verbose logging or network sniffer. Normal session, no TLS: disconnect from name[addr] ehlo=1 mail=1 rcpt=1 data=1 quit=1 Normal session. with TLS: disconnect from name[addr] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 All recipients rejected, no ESMTP command pipelining: disconnect from name[addr] ehlo=1 mail=1 rcpt=0/1 quit=1 All recipients rejected, with ESMTP command pipelining: disconnect from name[addr] ehlo=1 mail=1 rcpt=0/1 data=0/1 rset=1 quit=1 Password guessing bot, hangs up without QUIT: disconnect from name[addr] ehlo=1 auth=0/1 Mis-configured client trying to use TLS wrappermode on port 587: disconnect from name[addr] unknown=0/1 Logfile analyzers can trigger on the presence of "/". It indicates that Postfix rejected at least one command. [Feature 20150118] As a late addition, the SMTP server now also logs the total number of commands (as "commands=x/y") even when the client did not send any commands. This helps logfile analyzers to recognize sessions without commands. Major changes - smtp client --------------------------- [Feature 20141227] The new smtp_address_verify_target parameter (default: rcpt) determines what protocol stage decides if a recipient is valid. Specify "data" for servers that reject recipients after the DATA command. Major changes - smtputf8 ------------------------ [Incompat 20141001] The default settings have changed for append_dot_mydomain (new: no, old: yes), master.cf chroot (new: n, old: y), and smtputf8 (new: yes, old: no). [Incompat 20140714] After upgrading Postfix, "postfix reload" (or start/stop) is required. Several Postfix-internal protocols have been extended to support SMTPUTF8. Failure to reload or restart will result in mail staying queued, while Postfix daemons log warning messages about unexpected attributes. [Feature 20140715] Support for Email Address Internationalization (EAI) as defined in RFC 6531..6533. This supports UTF-8 in SMTP/LMTP sender addresses, recipient addresses, and message header values. The implementation is based on initial work by Arnt Gulbrandsen that was funded by CNNIC. See SMTPUTF8_README for a description of Postfix SMTPUTF8 support. [Feature 20150112] UTF-8 Casefolding support for Postfix lookup tables and matchlists (mydestination, relay_domains, etc.). This is enabled only with "smtpuf8 = yes". [Feature 20150112] With smtputf8_enable=yes, SMTP commands with UTF-8 syntax errors are rejected, table lookup results with invalid UTF-8 syntax are handled as configuration errors, and UTF-8 syntax errors in policy server replies result in execution of the policy server's default action. Major changes - tls support --------------------------- (see "Major changes - delivery status notifications" above for turning 4XX soft errors into 5XX bounces when a remote SMTP server does not offer STARTTLS support). [Feature 20140209] the Postfix SMTP client now also falls back to plaintext when TLS fails AFTER the TLS protocol handshake. [Feature 20140218] The Postfix SMTP client now requires that a queue file is older than $minimal_backoff_time, before falling back from failed TLS to plaintext (both during or after the TLS handshake). [Feature 20141021] Per IETF TLS WG consensus, the tls_session_ticket_cipher default setting was changed from aes-128-cbc to aes-256-cbc. [Feature 20150116] TLS wrappermode support in the Postfix smtp(8) client (new smtp_tls_wrappermode parameter) and in posttls-finger(1) (new -w option). There still is life in that deprecated protocol, and people should not have to jump hoops with stunnel. @ text @d37 5 a41 5 By default, postscreen(8) logs statistics and hands off each connection to a Postfix SMTP server process, while excluding clients in mynetworks from all tests (primarily, to avoid problems with non-standard SMTP implementations in network appliances). This default mode blocks no clients, and is useful for non-destructive testing. d84 4 a87 4 adds the client to the temporary whitelist, but it cannot hand off the "live" connection to a Postfix SMTP server process in the middle of a session. Instead, postscreen(8) defers attempts to deliver mail with a 4XX status, and waits for the client to disconnect. When the client d103 2 a104 2 stress-dependent (that is, it looks like ${stress?{X}:{Y}}, or it is the $name of an smtpd parameter with a stress-dependent default). a123 5 Available in Postfix version 3.1 and later: dns_ncache_ttl_fix_enable (no) Enable a workaround for future libc incompatibility. d141 2 a142 2 The name of the proxy protocol used by an optional before-postscreen proxy agent. d170 3 a172 3 A list of local postscreen(8) server IP addresses where a non-whitelisted remote SMTP client can obtain postscreen(8)'s temporary whitelist status. d214 1 a214 1 postscreen_greet_wait (normal: 6s, overload: 2s) a230 5 Available in Postfix version 3.0 and later: postscreen_dnsbl_timeout (10s) The time limit for DNSBL or DNSWL lookups. d290 3 a292 10 postscreen_dnsbl_max_ttl (${postscreen_dnsbl_ttl?{$postscreen_dnsbl_ttl}:{1}}h) The maximum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a client IP address is required to pass that test again. postscreen_dnsbl_min_ttl (60s) The minimum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a client IP address is required to pass that test again. d308 1 a308 1 Upon input, long lines are chopped up into pieces of at most d313 1 a313 1 How many simultaneous connections any remote SMTP client is d317 1 a317 1 The limit on the total number of commands per SMTP session for d320 2 a321 2 postscreen_command_time_limit (normal: 300s, overload: 10s) The time limit to read an entire command line with d325 1 a325 1 The number of clients that can be waiting for service from a d329 2 a330 2 The number of non-whitelisted clients that can be waiting for a decision whether they will receive service from a real Postfix d334 2 a335 2 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation d348 1 a348 1 These parameters are supported for compatibility with smtpd(8) legacy d352 1 a352 1 Opportunistic TLS: announce STARTTLS support to remote SMTP d361 1 a361 1 The default location of the Postfix main.cf and master.cf con- d365 1 a365 1 The maximal number of digits after the decimal point when log- d372 1 a372 1 The maximum amount of time that an idle Postfix daemon process d385 2 a386 2 The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "post- d404 1 a404 1 Many ideas in postscreen(8) were explored in earlier work by Michael a412 5 Wietse Venema Google, Inc. 111 8th Avenue New York, NY 10011, USA @ 1.1.1.5.14.1 log @Pull up the following, requeste by kim in ticket #1779: external/ibm-public/postfix/dist/README_FILES/BDAT_README up to 1.1.1.2 external/ibm-public/postfix/dist/README_FILES/MAILLOG_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/POSTSCREEN_3_5_README up to 1.1.1.1 external/ibm-public/postfix/dist/html/BDAT_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/MAILLOG_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/makedefs.1.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/postlogd.8.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/POSTSCREEN_3_5_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/html/postfix-doc.css up to 1.1.1.1 external/ibm-public/postfix/dist/man/man1/makedefs.1 up to 1.3 external/ibm-public/postfix/dist/man/man8/postlogd.8 up to 1.3 external/ibm-public/postfix/dist/mantools/missing-proxy-read-maps up to 1.1.1.3 external/ibm-public/postfix/dist/mantools/spelldiff up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-double-cc up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-double-install-proto-text up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-double-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/comment.c up to 1.2 external/ibm-public/postfix/dist/mantools/check-postfix-files up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-cc up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-install-proto-text up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/deroff up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/find-double up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-double-history up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-spell-history up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-table-proto up to 1.1.1.1 external/ibm-public/postfix/dist/proto/BDAT_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/proto/MAILLOG_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/proto/POSTSCREEN_3_5_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.double-cc up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.double-install-proto-text up to 1.1.1.1 external/ibm-public/postfix/dist/proto/stop.double-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.spell-cc up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.spell-proto-html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/stop.double-history up to 1.1.1.1 external/ibm-public/postfix/dist/proto/stop.spell-history up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/bounce_notify_util_tester.c up to 1.2 external/ibm-public/postfix/dist/src/bounce/logfile-no-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-no-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-with-filter up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/logfile-with-msgid-with-long-line up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-no-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-no-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-no-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-with-eoh-event up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/obs_template_test.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-with-filter up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/msgfile-with-msgid-with-long-line up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-no-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-no-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-with-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/no-msgid-with-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-no-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-no-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-eoh-event-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-eoh-event-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-filter-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-filter-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-long-line-no-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/bounce/with-msgid-with-long-line-with-thread.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13h up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in13i up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13h up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref13i up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13h up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file13i up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17a up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17b up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17c up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17d up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17e up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17f up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.in17g up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17a1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17a2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17b1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17b2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17c1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17c2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17d1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17d2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17e1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17e2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17f1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17f2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17g1 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.ref17g2 up to 1.1.1.1 external/ibm-public/postfix/dist/src/cleanup/test-queue-file17 up to 1.1.1.1 external/ibm-public/postfix/dist/src/dns/dns_str_resflags.c up to 1.3 external/ibm-public/postfix/dist/src/dns/dns_sec.c up to 1.2 external/ibm-public/postfix/dist/src/global/header_body_checks_strip.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/info_log_addr_form.c up to 1.2 external/ibm-public/postfix/dist/src/global/info_log_addr_form.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_crunch.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/mail_addr_crunch.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/mail_addr_find.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/map_search.c up to 1.4 external/ibm-public/postfix/dist/src/global/map_search.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_find.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/mail_addr_form.c up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_form.h up to 1.2 external/ibm-public/postfix/dist/src/global/mail_addr_map.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/maillog_client.c up to 1.3 external/ibm-public/postfix/dist/src/global/maillog_client.h up to 1.2 external/ibm-public/postfix/dist/src/global/map_search.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/normalize_mailhost_addr.c up to 1.3 external/ibm-public/postfix/dist/src/global/normalize_mailhost_addr.h up to 1.2 external/ibm-public/postfix/dist/src/global/off_cvt.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/off_cvt.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/quote_822_local.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/quote_822_local.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/quote_flags.c up to 1.2 external/ibm-public/postfix/dist/src/global/reject_deliver_request.c up to 1.2 external/ibm-public/postfix/dist/src/global/compat_level.c up to 1.3 external/ibm-public/postfix/dist/src/global/compat_level.h up to 1.3 external/ibm-public/postfix/dist/src/global/test_main.c up to 1.2 external/ibm-public/postfix/dist/src/global/compat_level_convert.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/compat_level_convert.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/compat_level_expand.in up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/compat_level_expand.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/config_known_tcp_ports.c up to 1.2 external/ibm-public/postfix/dist/src/global/config_known_tcp_ports.h up to 1.2 external/ibm-public/postfix/dist/src/global/config_known_tcp_ports.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/delivered_hdr.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/hfrom_format.c up to 1.2 external/ibm-public/postfix/dist/src/global/hfrom_format.h up to 1.2 external/ibm-public/postfix/dist/src/global/hfrom_format.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/login_sender_match.c up to 1.2 external/ibm-public/postfix/dist/src/global/login_sender_match.h up to 1.2 external/ibm-public/postfix/dist/src/global/login_sender_match.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/sasl_mech_filter.c up to 1.2 external/ibm-public/postfix/dist/src/global/sasl_mech_filter.h up to 1.2 external/ibm-public/postfix/dist/src/global/test_main.h up to 1.2 external/ibm-public/postfix/dist/src/master/dgram_server.c up to 1.3 external/ibm-public/postfix/dist/src/postconf/extract_cfg.sh up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test64.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test65.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test66.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test67.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test68.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test69.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test70.ref up to 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1.1.1.3 external/ibm-public/postfix/dist/README_FILES/TLS_README up to 1.14 external/ibm-public/postfix/dist/README_FILES/TUNING_README up to 1.1.1.5 external/ibm-public/postfix/dist/README_FILES/VIRTUAL_README up to 1.1.1.3 external/ibm-public/postfix/dist/README_FILES/XCLIENT_README up to 1.1.1.4 external/ibm-public/postfix/dist/conf/LICENSE up to 1.1.1.2 external/ibm-public/postfix/dist/conf/TLS_LICENSE up to 1.1.1.2 external/ibm-public/postfix/dist/conf/access up to 1.1.1.8 external/ibm-public/postfix/dist/conf/aliases up to 1.1.1.5 external/ibm-public/postfix/dist/conf/canonical up to 1.1.1.5 external/ibm-public/postfix/dist/conf/generic up to 1.1.1.4 external/ibm-public/postfix/dist/conf/header_checks up to 1.1.1.6 external/ibm-public/postfix/dist/conf/main.cf up to 1.10 external/ibm-public/postfix/dist/conf/master.cf up to 1.11 external/ibm-public/postfix/dist/conf/post-install up to 1.4 external/ibm-public/postfix/dist/conf/postfix-files up to 1.9 external/ibm-public/postfix/dist/conf/postfix-script up to 1.4 external/ibm-public/postfix/dist/conf/postfix-tls-script up to 1.5 external/ibm-public/postfix/dist/conf/postmulti-script up to 1.3 external/ibm-public/postfix/dist/conf/relocated up to 1.1.1.3 external/ibm-public/postfix/dist/conf/transport up to 1.1.1.5 external/ibm-public/postfix/dist/conf/virtual up to 1.1.1.6 external/ibm-public/postfix/dist/html/ADDRESS_CLASS_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/ADDRESS_REWRITING_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/ADDRESS_VERIFICATION_README.html up to 1.11 external/ibm-public/postfix/dist/html/BACKSCATTER_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/BASIC_CONFIGURATION_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/BUILTIN_FILTER_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/CDB_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/COMPATIBILITY_README.html up to 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external/ibm-public/postfix/dist/src/master/master_spawn.c up to 1.3 external/ibm-public/postfix/dist/src/master/master_vars.c up to 1.3 external/ibm-public/postfix/dist/src/master/master_wakeup.c up to 1.3 external/ibm-public/postfix/dist/src/master/multi_server.c up to 1.4 external/ibm-public/postfix/dist/src/master/single_server.c up to 1.4 external/ibm-public/postfix/dist/src/master/trigger_server.c up to 1.4 external/ibm-public/postfix/dist/src/milter/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/milter/milter.c up to 1.5 external/ibm-public/postfix/dist/src/milter/milter.h up to 1.4 external/ibm-public/postfix/dist/src/milter/milter8.c up to 1.5 external/ibm-public/postfix/dist/src/milter/milter_macros.c up to 1.3 external/ibm-public/postfix/dist/src/milter/test-milter.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/oqmgr/qmgr.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr.h up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_active.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_deliver.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_entry.c up to 1.3 external/ibm-public/postfix/dist/src/oqmgr/qmgr_error.c up to 1.2 external/ibm-public/postfix/dist/src/oqmgr/qmgr_feedback.c up to 1.2 external/ibm-public/postfix/dist/src/oqmgr/qmgr_message.c up to 1.4 external/ibm-public/postfix/dist/src/pickup/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/pickup/pickup.c up to 1.4 external/ibm-public/postfix/dist/src/pipe/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/pipe/pipe.c up to 1.4 external/ibm-public/postfix/dist/src/postalias/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/postalias/fail_test.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/postalias/fail_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postalias/postalias.c up to 1.5 external/ibm-public/postfix/dist/src/postcat/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postcat/postcat.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/postconf/extract.awk up to 1.1.1.6 external/ibm-public/postfix/dist/src/postconf/install_vars.h up to 1.2 external/ibm-public/postfix/dist/src/postconf/postconf.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf.h up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_builtin.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_dbms.c up to 1.5 external/ibm-public/postfix/dist/src/postconf/postconf_edit.c up to 1.3 external/ibm-public/postfix/dist/src/postconf/postconf_lookup.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_main.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_master.c up to 1.8 external/ibm-public/postfix/dist/src/postconf/postconf_misc.c up to 1.3 external/ibm-public/postfix/dist/src/postconf/postconf_user.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/test28.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postconf/test29.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postconf/test34.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test35.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test40.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/postconf/test41.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test42.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test43.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test44.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test58.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postconf/test59.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postdrop/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postdrop/postdrop.c up to 1.4 external/ibm-public/postfix/dist/src/postfix/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postfix/postfix.c up to 1.6 external/ibm-public/postfix/dist/src/postkick/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postkick/postkick.c up to 1.4 external/ibm-public/postfix/dist/src/postlock/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postlock/postlock.c up to 1.4 external/ibm-public/postfix/dist/src/postlog/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postlog/postlog.c up to 1.5 external/ibm-public/postfix/dist/src/postmap/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/postmap/fail_test.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/postmap/fail_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postmap/postmap.c up to 1.5 external/ibm-public/postfix/dist/src/postmulti/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postmulti/postmulti.c up to 1.4 external/ibm-public/postfix/dist/src/postqueue/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/postqueue/postqueue.c up to 1.5 external/ibm-public/postfix/dist/src/postqueue/showq_compat.c up to 1.4 external/ibm-public/postfix/dist/src/postqueue/showq_json.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/postscreen/postscreen.c up to 1.5 external/ibm-public/postfix/dist/src/postscreen/postscreen.h up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_dnsbl.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_early.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_endpt.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_haproxy.c up to 1.3 external/ibm-public/postfix/dist/src/postscreen/postscreen_haproxy.h up to 1.2 external/ibm-public/postfix/dist/src/postscreen/postscreen_misc.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_send.c up to 1.3 external/ibm-public/postfix/dist/src/postscreen/postscreen_smtpd.c up to 1.5 external/ibm-public/postfix/dist/src/postscreen/postscreen_starttls.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_state.c up to 1.4 external/ibm-public/postfix/dist/src/postscreen/postscreen_tests.c up to 1.4 external/ibm-public/postfix/dist/src/postsuper/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/postsuper/postsuper.c up to 1.4 external/ibm-public/postfix/dist/src/posttls-finger/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/posttls-finger/posttls-finger.c up to 1.5 external/ibm-public/postfix/dist/src/proxymap/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/proxymap/proxymap.c up to 1.4 external/ibm-public/postfix/dist/src/qmgr/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/qmgr/qmgr.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr.h up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_active.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_deliver.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_entry.c up to 1.3 external/ibm-public/postfix/dist/src/qmgr/qmgr_error.c up to 1.2 external/ibm-public/postfix/dist/src/qmgr/qmgr_feedback.c up to 1.2 external/ibm-public/postfix/dist/src/qmgr/qmgr_message.c up to 1.4 external/ibm-public/postfix/dist/src/qmqpd/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/qmqpd/qmqpd.c up to 1.4 external/ibm-public/postfix/dist/src/qmqpd/qmqpd_peer.c up to 1.3 external/ibm-public/postfix/dist/src/scache/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/scache/scache.c up to 1.4 external/ibm-public/postfix/dist/src/sendmail/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/sendmail/sendmail.c up to 1.4 external/ibm-public/postfix/dist/src/showq/Makefile.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/showq/showq.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/src/smtp/lmtp_params.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp.c up to 1.13 external/ibm-public/postfix/dist/src/smtp/smtp.h up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_addr.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_addr.h up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_chat.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_connect.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_key.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_map11.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_map11.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtp/smtp_params.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_proto.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_rcpt.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_reuse.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_sasl_auth_cache.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_sasl_glue.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_sasl_proto.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_session.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_state.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_tls_policy.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_trouble.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/smtpd/pfilter.c up to 1.2 (+patch) external/ibm-public/postfix/dist/src/smtpd/smtpd.c up to 1.20 external/ibm-public/postfix/dist/src/smtpd/smtpd.h up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_acl.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_acl.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_chat.c up to 1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_chat.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.c up to 1.6 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.in2 up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.in3 up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.ref2 up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_backup.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_backup.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_dsn.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_check_dsn.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_dns_filter.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_dnswl.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_dnswl.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_error.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_error.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_exp.in up to 1.1.1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_exp.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_expand.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_haproxy.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_milter.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_nullmx.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_nullmx.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/smtpd/smtpd_peer.c up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_proxy.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_resolve.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_resolve.h up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_sasl_glue.c up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_sasl_proto.c up to 1.3 external/ibm-public/postfix/dist/src/smtpd/smtpd_server.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_server.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_state.c up to 1.2 external/ibm-public/postfix/dist/src/smtpstone/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/smtpstone/smtp-sink.c up to 1.3 external/ibm-public/postfix/dist/src/smtpstone/smtp-source.c up to 1.3 external/ibm-public/postfix/dist/src/spawn/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/spawn/spawn.c up to 1.4 external/ibm-public/postfix/dist/src/tls/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/src/tls/tls.h up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_bio_ops.c up to 1.1.1.6 external/ibm-public/postfix/dist/src/tls/tls_certkey.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_client.c up to 1.13 external/ibm-public/postfix/dist/src/tls/tls_dane.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_dh.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_fprint.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_mgr.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_misc.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_proxy.h up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_clnt.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_rsa.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_scache.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_server.c up to 1.12 external/ibm-public/postfix/dist/src/tls/tls_session.c up to 1.3 external/ibm-public/postfix/dist/src/tls/tls_verify.c up to 1.4 external/ibm-public/postfix/dist/src/tlsmgr/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/tlsmgr/tlsmgr.c up to 1.4 external/ibm-public/postfix/dist/src/tlsproxy/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy.c up to 1.6 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy.h up to 1.2 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy_state.c up to 1.3 external/ibm-public/postfix/dist/src/trivial-rewrite/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/trivial-rewrite/resolve.c up to 1.4 external/ibm-public/postfix/dist/src/trivial-rewrite/rewrite.c up to 1.3 external/ibm-public/postfix/dist/src/trivial-rewrite/transport.c up to 1.4 external/ibm-public/postfix/dist/src/trivial-rewrite/trivial-rewrite.c up to 1.4 external/ibm-public/postfix/dist/src/trivial-rewrite/trivial-rewrite.h up to 1.3 external/ibm-public/postfix/dist/src/util/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/util/allascii.c up to 1.3 external/ibm-public/postfix/dist/src/util/alldig.c up to 1.2 external/ibm-public/postfix/dist/src/util/argv.c up to 1.4 external/ibm-public/postfix/dist/src/util/argv.h up to 1.4 external/ibm-public/postfix/dist/src/util/attr.h up to 1.5 external/ibm-public/postfix/dist/src/util/attr_clnt.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_clnt.h up to 1.3 external/ibm-public/postfix/dist/src/util/attr_print0.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_print64.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_print_plain.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan0.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan0.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/attr_scan64.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan64.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/attr_scan_plain.c up to 1.3 external/ibm-public/postfix/dist/src/util/attr_scan_plain.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/auto_clnt.c up to 1.4 external/ibm-public/postfix/dist/src/util/auto_clnt.h up to 1.2 external/ibm-public/postfix/dist/src/util/base32_code.h up to 1.3 external/ibm-public/postfix/dist/src/util/base64_code.h up to 1.3 external/ibm-public/postfix/dist/src/util/binhash.c up to 1.3 external/ibm-public/postfix/dist/src/util/binhash.h up to 1.3 external/ibm-public/postfix/dist/src/util/casefold.c up to 1.3 external/ibm-public/postfix/dist/src/util/check_arg.h up to 1.3 external/ibm-public/postfix/dist/src/util/cidr_match.c up to 1.4 external/ibm-public/postfix/dist/src/util/cidr_match.h up to 1.2 external/ibm-public/postfix/dist/src/util/clean_env.c up to 1.3 external/ibm-public/postfix/dist/src/util/clean_env.h up to 1.2 external/ibm-public/postfix/dist/src/util/connect.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict.h up to 1.5 external/ibm-public/postfix/dist/src/util/dict_alloc.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_cache.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_cdb.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_cdb.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_cidr.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_cidr.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_cidr.map up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_cidr.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/dict_db.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_db.h up to 1.4 external/ibm-public/postfix/dist/src/util/dict_dbm.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_fail.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_fail.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_inline.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_lmdb.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_lmdb.h up to 1.3 external/ibm-public/postfix/dist/src/util/dict_open.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_pcre.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_pcre.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_pcre.map up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/dict_pcre.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/dict_random.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_random.h up to 1.3 external/ibm-public/postfix/dist/src/util/dict_regexp.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_regexp.map up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_regexp.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/dict_sdbm.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_static.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_thash.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_thash.map up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/dict_union.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_utf8.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_utf8_test.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dup2_pass_on_exec.c up to 1.2 external/ibm-public/postfix/dist/src/util/edit_file.c up to 1.4 external/ibm-public/postfix/dist/src/util/edit_file.h up to 1.3 external/ibm-public/postfix/dist/src/util/extpar.c up to 1.4 external/ibm-public/postfix/dist/src/util/find_inet.c up to 1.3 external/ibm-public/postfix/dist/src/util/gccw.c up to 1.2 external/ibm-public/postfix/dist/src/util/hex_code.c up to 1.3 external/ibm-public/postfix/dist/src/util/hex_code.h up to 1.4 external/ibm-public/postfix/dist/src/util/hex_quote.c up to 1.2 external/ibm-public/postfix/dist/src/util/host_port.h up to 1.3 external/ibm-public/postfix/dist/src/util/htable.c up to 1.4 external/ibm-public/postfix/dist/src/util/inet_addr_host.c up to 1.3 external/ibm-public/postfix/dist/src/util/inet_addr_list.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/inet_addr_list.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/inet_connect.c up to 1.3 external/ibm-public/postfix/dist/src/util/inet_listen.c up to 1.3 external/ibm-public/postfix/dist/src/util/inet_proto.c up to 1.4 external/ibm-public/postfix/dist/src/util/inet_proto.h up to 1.2 external/ibm-public/postfix/dist/src/util/killme_after.c up to 1.2 external/ibm-public/postfix/dist/src/util/listen.h up to 1.3 external/ibm-public/postfix/dist/src/util/load_lib.c up to 1.3 external/ibm-public/postfix/dist/src/util/lstat_as.h up to 1.3 external/ibm-public/postfix/dist/src/util/mac_expand.c up to 1.4 external/ibm-public/postfix/dist/src/util/mac_expand.h up to 1.4 external/ibm-public/postfix/dist/src/util/mac_expand.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/mac_expand.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/util/mac_parse.h up to 1.3 external/ibm-public/postfix/dist/src/util/make_dirs.c up to 1.2 external/ibm-public/postfix/dist/src/util/match_list.c up to 1.3 external/ibm-public/postfix/dist/src/util/match_ops.c up to 1.3 external/ibm-public/postfix/dist/src/util/midna_domain.c up to 1.4 external/ibm-public/postfix/dist/src/util/midna_domain.h up to 1.4 external/ibm-public/postfix/dist/src/util/midna_domain_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/msg_output.c up to 1.4 external/ibm-public/postfix/dist/src/util/msg_output.h up to 1.3 external/ibm-public/postfix/dist/src/util/msg_syslog.c up to 1.2 external/ibm-public/postfix/dist/src/util/msg_syslog.h up to 1.3 external/ibm-public/postfix/dist/src/util/mvect.c up to 1.3 external/ibm-public/postfix/dist/src/util/myaddrinfo.c up to 1.3 external/ibm-public/postfix/dist/src/util/myaddrinfo.h up to 1.3 external/ibm-public/postfix/dist/src/util/myaddrinfo.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/util/myaddrinfo4.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/myflock.c up to 1.3 external/ibm-public/postfix/dist/src/util/myflock.h up to 1.3 external/ibm-public/postfix/dist/src/util/mymalloc.c up to 1.4 external/ibm-public/postfix/dist/src/util/mymalloc.h up to 1.4 external/ibm-public/postfix/dist/src/util/mystrtok.c up to 1.4 external/ibm-public/postfix/dist/src/util/name_mask.c up to 1.3 external/ibm-public/postfix/dist/src/util/nbbio.c up to 1.3 external/ibm-public/postfix/dist/src/util/netstring.c up to 1.3 external/ibm-public/postfix/dist/src/util/peekfd.c up to 1.3 external/ibm-public/postfix/dist/src/util/printable.c up to 1.3 external/ibm-public/postfix/dist/src/util/recv_pass_attr.c up to 1.3 external/ibm-public/postfix/dist/src/util/sane_fsops.h up to 1.3 external/ibm-public/postfix/dist/src/util/sane_link.c up to 1.2 external/ibm-public/postfix/dist/src/util/sane_rename.c up to 1.2 external/ibm-public/postfix/dist/src/util/sane_socketpair.h up to 1.3 external/ibm-public/postfix/dist/src/util/slmdb.c up to 1.4 external/ibm-public/postfix/dist/src/util/sock_addr.c up to 1.3 external/ibm-public/postfix/dist/src/util/sock_addr.h up to 1.2 external/ibm-public/postfix/dist/src/util/split_nameval.c up to 1.2 external/ibm-public/postfix/dist/src/util/stat_as.h up to 1.3 external/ibm-public/postfix/dist/src/util/stringops.h up to 1.5 external/ibm-public/postfix/dist/src/util/sys_compat.c up to 1.3 external/ibm-public/postfix/dist/src/util/sys_defs.h up to 1.14 external/ibm-public/postfix/dist/src/util/timed_wait.h up to 1.3 external/ibm-public/postfix/dist/src/util/unix_pass_fd_fix.c up to 1.2 external/ibm-public/postfix/dist/src/util/unix_send_fd.c up to 1.8 external/ibm-public/postfix/dist/src/util/unsafe.c up to 1.2 external/ibm-public/postfix/dist/src/util/valid_hostname.c up to 1.3 external/ibm-public/postfix/dist/src/util/valid_hostname.h up to 1.2 external/ibm-public/postfix/dist/src/util/vbuf.c up to 1.3 external/ibm-public/postfix/dist/src/util/vbuf_print.c up to 1.4 external/ibm-public/postfix/dist/src/util/vstream.c up to 1.4 external/ibm-public/postfix/dist/src/util/vstream.h up to 1.4 external/ibm-public/postfix/dist/src/util/vstream_tweak.c up to 1.3 external/ibm-public/postfix/dist/src/util/vstring.c up to 1.4 external/ibm-public/postfix/dist/src/util/vstring.h up to 1.4 external/ibm-public/postfix/dist/src/util/vstring_vstream.c up to 1.2 external/ibm-public/postfix/dist/src/util/vstring_vstream.h up to 1.3 external/ibm-public/postfix/dist/src/util/watchdog.c up to 1.3 external/ibm-public/postfix/dist/src/verify/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/verify/verify.c up to 1.4 external/ibm-public/postfix/dist/src/virtual/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/virtual/mailbox.c up to 1.3 external/ibm-public/postfix/dist/src/virtual/virtual.c up to 1.4 external/ibm-public/postfix/dist/src/xsasl/Makefile.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/xsasl/xsasl.h up to 1.3 external/ibm-public/postfix/dist/src/xsasl/xsasl_cyrus_client.c up to 1.3 external/ibm-public/postfix/dist/src/xsasl/xsasl_cyrus_server.c up to 1.4 external/ibm-public/postfix/dist/src/xsasl/xsasl_dovecot_server.c up to 1.4 external/ibm-public/postfix/dist/src/xsasl/xsasl_saslc_client.c up to 1.2 external/ibm-public/postfix/dist/src/xsasl/xsasl_server.c up to 1.2 external/ibm-public/postfix/lib/dns/Makefile up to 1.4 external/ibm-public/postfix/lib/global/Makefile up to 1.10 external/ibm-public/postfix/lib/masterlib/Makefile up to 1.3 external/ibm-public/postfix/lib/milter/Makefile up to 1.2 external/ibm-public/postfix/lib/tls/Makefile up to 1.4 external/ibm-public/postfix/lib/util/Makefile up to 1.11 external/ibm-public/postfix/lib/xsasl/Makefile up to 1.3 external/ibm-public/postfix/libexec/smtp/Makefile up to 1.4 external/ibm-public/postfix/libexec/smtpd/Makefile up to 1.9 (+patch) external/ibm-public/postfix/libexec/tlsproxy/Makefile up to 1.2 external/ibm-public/postfix/sbin/postconf/Makefile up to 1.9 doc/3RDPARTY (apply patch) Update Postfix to 3.8.4. @ text @d4 1 a4 2 d25 2 a26 2 the MX service on TCP port 25, and smtpd(8) receives mail from MUAs on the submission service (TCP port 587) which requires client authentica- d31 1 a31 1 postscreen(8) maintains a temporary allowlist for clients that have d33 1 a33 1 allowlisted, postscreen(8) hands off the connection immediately to a d58 13 a70 14 RFC 821 (SMTP protocol) RFC 1123 (Host requirements) RFC 1652 (8bit-MIME transport) RFC 1869 (SMTP service extensions) RFC 1870 (Message Size Declaration) RFC 1985 (ETRN command) RFC 2034 (SMTP Enhanced Status Codes) RFC 2821 (SMTP protocol) Not: RFC 2920 (SMTP Pipelining) RFC 3030 (CHUNKING without BINARYMIME) RFC 3207 (STARTTLS command) RFC 3461 (SMTP DSN Extension) RFC 3463 (Enhanced Status Codes) RFC 5321 (SMTP protocol, including multi-line 220 banners) d73 1 a73 1 Problems and transactions are logged to syslogd(8) or postlogd(8). d79 2 a80 1 "after 220 server greeting" tests. d82 10 a91 6 The optional "after 220 server greeting" tests may result in unexpected delivery delays from senders that retry email delivery from a different IP address. Reason: after passing these tests a new client must dis- connect, and reconnect from the same IP address before it can deliver mail. See POSTSCREEN_README, section "Tests after the 220 SMTP server greeting", for a discussion. d94 2 a95 2 Changes to main.cf are not picked up automatically, as postscreen(8) processes may run for several hours. Use the command "postfix reload" d98 1 a98 1 The text below provides only a parameter summary. See postconf(5) for d101 5 a105 5 NOTE: Some postscreen(8) parameters implement stress-dependent behav- ior. This is supported only when the default parameter value is stress-dependent (that is, it looks like ${stress?{X}:{Y}}, or it is the $name of an smtpd parameter with a stress-dependent default). Other parameters always evaluate as if the stress parameter value is d114 3 a116 3 Lookup tables, indexed by the remote SMTP client address, with case insensitive lists of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the d120 2 a121 2 A case insensitive list of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the a128 11 Available in Postfix version 3.4 and later: postscreen_reject_footer_maps ($smtpd_reject_footer_maps) Optional lookup table for information that is appended after a 4XX or 5XX postscreen(8) server response. Available in Postfix 3.6 and later: respectful_logging (see 'postconf -d' output) Avoid logging that implies white is better than black. d153 1 a153 1 PERMANENT ALLOW/DENYLIST TEST d155 1 a155 1 If a client is permanently allowlisted, the client will be handed off d159 1 a159 1 Permanent allow/denylist for remote SMTP client IP addresses. d162 3 a164 1 Renamed to postscreen_denylist_action in Postfix 3.6. d168 1 a168 1 addresses, it can refuse to allowlist clients that connect to a backup d174 1 a174 1 postscreen_allowlist_interfaces (static:all) d176 2 a177 2 non-allowlisted remote SMTP client can obtain postscreen(8)'s temporary allowlist status. d195 3 a197 3 A mapping from an actual DNSBL domain name which includes a secret password, to the DNSBL domain name that postscreen will reply with when it rejects mail. d200 2 a201 2 Optional list of patterns with DNS allow/denylist domains, fil- ters and weight factors. d232 3 a234 1 Renamed to postscreen_dnsbl_allowlist_threshold in Postfix 3.6. a240 17 Available in Postfix version 3.6 and later: postscreen_denylist_action (ignore) The action that postscreen(8) takes when a remote SMTP client is permanently denylisted with the postscreen_access_list parame- ter. postscreen_allowlist_interfaces (static:all) A list of local postscreen(8) server IP addresses where a non-allowlisted remote SMTP client can obtain postscreen(8)'s temporary allowlist status. postscreen_dnsbl_allowlist_threshold (0) Allow a remote SMTP client to skip "before" and "after 220 greeting" protocol tests, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. d243 3 a245 3 servername" greeting. If a client passes all tests during this phase, it will receive a 4XX response to all RCPT TO commands. After the client reconnects, it will be allowed to talk directly to a Postfix d249 2 a250 2 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded d254 1 a254 1 Enable "bare newline" SMTP protocol tests in the postscreen(8) d269 1 a269 1 The action that postscreen(8) takes when a remote SMTP client d277 1 a277 1 The action that postscreen(8) takes when a remote SMTP client d282 1 a282 1 Enable "pipelining" SMTP protocol tests in the postscreen(8) d294 1 a294 1 porary allowlist entry before it is removed. d302 2 a303 2 The maximum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a d307 2 a308 2 The minimum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a d325 1 a325 1 Upon input, long lines are chopped up into pieces of at most d330 1 a330 1 How many simultaneous connections any remote SMTP client is d334 1 a334 1 The limit on the total number of commands per SMTP session for d338 1 a338 1 The time limit to read an entire command line with d342 1 a342 1 The number of clients that can be waiting for service from a d346 2 a347 2 The number of non-allowlisted clients that can be waiting for a decision whether they will receive service from a real Postfix d351 2 a352 2 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation d365 1 a365 1 These parameters are supported for compatibility with smtpd(8) legacy d369 1 a369 1 Opportunistic TLS: announce STARTTLS support to remote SMTP d378 1 a378 1 The default location of the Postfix main.cf and master.cf con- d382 1 a382 1 The maximal number of digits after the decimal point when log- d389 1 a389 1 The maximum amount of time that an idle Postfix daemon process d402 3 a404 13 A prefix that is prepended to the process name in syslog records, so that, for example, "smtpd" becomes "prefix/smtpd". Available in Postfix 3.3 and later: service_name (read-only) The master.cf service name of a Postfix daemon process. Available in Postfix 3.5 and later: info_log_address_format (external) The email address form that will be used in non-debug logging (info, warning, etc.). d409 1 a409 2 dnsblog(8), DNS allow/denylist logger postlogd(8), Postfix logging d421 1 a421 1 Many ideas in postscreen(8) were explored in earlier work by Michael @ 1.1.1.5.12.1 log @Merge changes from current as of 20200406 @ text @d25 2 a26 2 the MX service on TCP port 25, and smtpd(8) receives mail from MUAs on the submission service (TCP port 587) which requires client authentica- a66 1 RFC 3030 (CHUNKING without BINARYMIME) d73 1 a73 1 Problems and transactions are logged to syslogd(8) or postlogd(8). d79 2 a80 1 "after 220 server greeting" tests. d82 10 a91 6 The optional "after 220 server greeting" tests may result in unexpected delivery delays from senders that retry email delivery from a different IP address. Reason: after passing these tests a new client must dis- connect, and reconnect from the same IP address before it can deliver mail. See POSTSCREEN_README, section "Tests after the 220 SMTP server greeting", for a discussion. d94 2 a95 2 Changes to main.cf are not picked up automatically, as postscreen(8) processes may run for several hours. Use the command "postfix reload" d98 1 a98 1 The text below provides only a parameter summary. See postconf(5) for d101 5 a105 5 NOTE: Some postscreen(8) parameters implement stress-dependent behav- ior. This is supported only when the default parameter value is stress-dependent (that is, it looks like ${stress?{X}:{Y}}, or it is the $name of an smtpd parameter with a stress-dependent default). Other parameters always evaluate as if the stress parameter value is d114 3 a116 3 Lookup tables, indexed by the remote SMTP client address, with case insensitive lists of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the d120 2 a121 2 A case insensitive list of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the a128 6 Available in Postfix version 3.4 and later: postscreen_reject_footer_maps ($smtpd_reject_footer_maps) Optional lookup table for information that is appended after a 4XX or 5XX postscreen(8) server response. d402 3 a404 13 A prefix that is prepended to the process name in syslog records, so that, for example, "smtpd" becomes "prefix/smtpd". Available in Postfix 3.3 and later: service_name (read-only) The master.cf service name of a Postfix daemon process. Available in Postfix 3.5 and later: info_log_address_format (external) The email address form that will be used in non-debug logging (info, warning, etc.). a409 1 postlogd(8), Postfix logging @ 1.1.1.6 log @This is the Postfix 3.5 (stable) release. The stable Postfix release is called postfix-3.5.x where 3=major release number, 5=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.6-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 3.3 or earlier, read RELEASE_NOTES-3.4 before proceeding. License change --------------- This software is distributed with a dual license: in addition to the historical IBM Public License 1.0, it is now also distributed with the more recent Eclipse Public License 2.0. Recipients can choose to take the software under the license of their choice. Those who are more comfortable with the IPL can continue with that license. Major changes - multiple relayhost in SMTP ------------------------------------------ [Feature 20200111] the Postfix SMTP and LMTP client support a list of nexthop destinations separated by comma or whitespace. These destinations will be tried in the specified order. The list form can be specified in relayhost, transport_maps, default_transport, and sender_dependent_default_transport_maps. Examples: /etc/postfix/main.cf: relayhost = foo.example, bar.example default_transport = smtp:foo.example, bar.example. NOTE: this is an SMTP and LMTP client feature. It does not work for other Postfix delivery agents. Major changes - certificate access ---------------------------------- [Feature 20190517] Search order support for check_ccert_access. Search order support for other tables is in design (canonical_maps, virtual_alias_maps, transport_maps, etc.). The following check_ccert_access setting uses the built-in search order: it first looks up the client certificate fingerprint, then the client certificate public-key fingerprint, and it stops when a decision is made. /etc/postfix/main.cf: smtpd_mumble_restrictions = ... check_ccert_access hash:/etc/postfix/ccert-access ... The following setting, with explicit search order, produces the exact same result: /etc/postfix/main.cf: smtpd_mumble_restrictions = ... check_ccert_access { hash:/etc/postfix/ccert-access { search_order = cert_fingerprint, pubkey_fingerprint } } ... Support is planned for other certificate features. Major changes - dovecot usability --------------------------------- [Feature 20190615] The SMTP+LMTP delivery agent can now prepend Delivered-To, X-Original-To and Return-Path headers, just like the pipe(8) and local(8) delivery agents. This uses the "flags=DORX" command-line flags in master.cf. See the smtp(8) manpage for details. This obsoletes the "lmtp_assume_final = yes" setting, and replaces it with "flags=...X...", for consistency with the pipe(8) delivery agent. Major changes - forced expiration --------------------------------- [Feature 20200202] Support to force-expire email messages. This introduces new postsuper(1) command-line options to request expiration, and additional information in mailq(1) or postqueue(1) output. The forced-to-expire status is stored in a queue file attribute. An expired message is returned to the sender when the queue manager attempts to deliver that message (note that Postfix will never deliver messages in the hold queue). The postsuper(1) -e and -f options both set the forced-to-expire queue file attribute. The difference is that -f will also release a message if it is in the hold queue. With -e, such a message would not be returned to the sender until it is released with -f or -H. In the mailq(1) or postqueue(1) -p output, a forced-to-expire message is indicated with # after the queue file name. In postqueue(1) JSON output, there is a new per-message field "forced_expire" (with value true or false) that shows the forced-to-expire status. Major changes - haproxy2 protocol --------------------------------- [Feature 20200112] Support for the haproxy v2 protocol. The Postfix implementation supports TCP over IPv4 and IPv6, as well as non-proxied connections; the latter are typically used for heartbeat tests. The haproxy v2 protocol introduces no additional Postfix configuration. The Postfix smtpd(8) and postscreen(8) daemons accept both v1 and v2 protocol versions. Major changes - logging ----------------------- [Incompat 20191109] Postfix daemon processes now log the from= and to= addresses in external (quoted) form in non-debug logging (info, warning, etc.). This means that when an address localpart contains spaces or other special characters, the localpart will be quoted, for example: from=<"name with spaces"@@example.com> Older Postfix versions would log the internal (unquoted) form: from= The external and internal forms are identical for the vast majority of email addresses that contain no spaces or other special characters in the localpart. Specify "info_log_address_format = internal" for backwards compatibility. The logging in external form is consistent with the address form that Postfix 3.2 and later prefer for table lookups. It is therefore the more useful form for non-debug logging. Major changes - IP address normalization ---------------------------------------- [Incompat 20190427] Postfix now normalizes IP addresses received with XCLIENT, XFORWARD, or with the HaProxy protocol, for consistency with direct connections to Postfix. This may change the appearance of logging, and the way that check_client_access will match subnets of an IPv6 address. This is the Postfix 3.4 (stable) release. The stable Postfix release is called postfix-3.4.x where 3=major release number, 4=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.5-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 3.2 or earlier, read RELEASE_NOTES-3.3 before proceeding. License change --------------- This software is distributed with a dual license: in addition to the historical IBM Public License 1.0, it is now also distributed with the more recent Eclipse Public License 2.0. Recipients can choose to take the software under the license of their choice. Those who are more comfortable with the IPL can continue with that license. Summary of changes ------------------ Incompatible changes, bdat support, containers, database support, logging, safety, tls connection pooling, tls support, usability, Incompatible changes -------------------- [Incompat 20180826] The Postfix SMTP server announces CHUNKING (BDAT command) by default. In the unlikely case that this breaks some important remote SMTP client, disable the feature as follows: /etc/postfix/main.cf: # The logging alternative: smtpd_discard_ehlo_keywords = chunking # The non-logging alternative: smtpd_discard_ehlo_keywords = chunking, silent_discard See BDAT_README for more. [Incompat 20190126] This introduces a new master.cf service 'postlog' with type 'unix-dgram' that is used by the new postlogd(8) daemon. Before backing out to an older Postfix version, edit the master.cf file and remove the postlog entry. [Incompat 20190106] Postfix 3.4 drops support for OpenSSL 1.0.1 (end-of-life was December 31, 2016) and all earlier releases. [Incompat 20180701] To avoid performance loss under load, the tlsproxy(8) daemon now requires a zero process limit in master.cf (this setting is provided with the default master.cf file). By default, a tlsproxy(8) process will retire after several hours. To set the tlsproxy process limit to zero: # postconf -F tlsproxy/unix/process_limit=0 # postfix reload Major changes - bdat support -------------------- [Feature 20180826] Postfix SMTP server support for RFC 3030 CHUNKING (the BDAT command) without BINARYMIME, in both smtpd(8) and postscreen(8). This has no effect on Milters, smtpd_mumble_restrictions, and smtpd_proxy_filter. See BDAT_README for more. Major changes - containers -------------------------- [Feature 20190126] Support for logging to file or stdout, instead of using syslog. - Logging to file solves a usability problem for MacOS, and eliminates multiple problems with systemd-based systems. - Logging to stdout is useful when Postfix runs in a container, as it eliminates a syslogd dependency. See MAILLOG_README for configuration examples and logfile rotation. [Feature 20180422] Better handling of undocumented(!) Linux behavior whether or not signals are delivered to a PID=1 process. Major changes - database support -------------------------------- [Feature 20181105] Support for (key, list of filenames) in map source text. - Currently, this feature is used only by tls_server_sni_maps. - When a map is created from source with "postmap -F maptype:mapname", the command processes each key as usual and processes each value as a list of filenames, concatenates the content of those files (with one newline character in-between files), and stores an entry with (key, base64-encoded result). - When a map is queried with "postmap -F -q ...", the command base64-decodes each value. It reports an error when a value is not in base64 form. This "postmap -F -q ..." behavior also works when querying the memory-resident map types cidr:, inline:, pcre:, randmap:, regexp:, and static:. Postfix reads the files specified as table values, stores base64-encoded content, and base64-decodes content upon table lookup. Internally, Postfix will turn on this behavior for lookups (not updates) when a map is opened with the DICT_FLAG_RHS_IS_FILE flag. Major changes - logging ----------------------- [Feature 20190126] Support for logging to file or stdout, instead of using syslog. - Logging to file solves a usability problem for MacOS, and eliminates multiple problems with systemd-based systems. - Logging to stdout is useful when Postfix runs in a container, as it eliminates a syslogd dependency. See MAILLOG_README for configuration examples and logfile rotation. Major changes - safety ---------------------- [Feature 20180623] Automatic retirement: dnsblog(8) and tlsproxy(8) process will now voluntarily retire after after max_idle*max_use, or some sane limit if either limit is disabled. Without this, a process could stay busy for days or more. Major changes - tls connection pooling -------------------------------------- [Feature 20180617] Postfix SMTP client support for multiple deliveries per TLS-encrypted connection. This is primarily to improve mail delivery performance for destinations that throttle clients when they don't combine deliveries. This feature is enabled with "smtp_tls_connection_reuse=yes" in main.cf, or with "tls_connection_reuse=yes" in smtp_tls_policy_maps. It supports all Postfix TLS security levels including dane and dane-only. The implementation of TLS connection reuse relies on the same scache(8) service as used for delivering plaintext SMTP mail, the same tlsproxy(8) daemon as used by the postscreen(8) service for inbound connections, and relies on the same hints from the qmgr(8) daemon. It reuses the configuration parameters described in CONNECTION_CACHE_README. The Postfix SMTP client now logs whether an SMTP-over-TLS connection is newly established ("TLS connection established") or whether the connection is reused ("TLS connection reused"). The following illustrates how TLS connections are reused: Initial plaintext SMTP handshake: smtp(8) -> remote SMTP server Reused SMTP/TLS connection, or new SMTP/TLS connection: smtp(8) -> tlsproxy(8) -> remote SMTP server Cached SMTP/TLS connection: scache(8) -> tlsproxy(8) -> remote SMTP server Major changes - tls support --------------------------- [Feature 20190106] SNI support in the Postfix SMTP server, the Postfix SMTP client, and in the tlsproxy(8) daemon (both server and client roles). See the postconf(5) documentation for the new tls_server_sni_maps and smtp_tls_servername parameters. [Feature 20190106] Support for files that contain multiple (key, certificate, trust chain) instances. This was required to implement server-side SNI table lookups, but it also eliminates the need for separate cert/key files for RSA, DSA, Elliptic Curve, and so on. The file format is documented in the TLS_README sections "Server-side certificate and private key configuration" and "Client-side certificate and private key configuration", and in the postconf(5) documentation for the parameters smtp_tls_chain_files, smtpd_tls_chain_files, tlsproxy_client_chain_files, and tlsproxy_tls_chain_files. Note: the command "postfix tls" does not yet support the new consolidated certificate chain format. If you switch to the new format, you'll need to manage your keys and certificates directly, rather than via postfix-tls(1). Major changes - usability ------------------------- [Feature 20180812] Support for smtpd_reject_footer_maps (as well as the postscreen variant postscreen_reject_footer_maps) for more informative reject messages. This is indexed with the Postfix SMTP server response text, and overrides the footer specified with smtpd_reject_footer. One will want to use a pcre: or regexp: map with this. This is the Postfix 3.3 (stable) release. The stable Postfix release is called postfix-3.3.x where 3=major release number, 3=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.4-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 3.1 or earlier, read RELEASE_NOTES-3.2 before proceeding. License change --------------- This software is distributed with a dual license: in addition to the historical IBM Public License 1.0, it is now also distributed with the more recent Eclipse Public License 2.0. Recipients can choose to take the software under the license of their choice. Those who are more comfortable with the IPL can continue with that license. Major changes - compatibility safety net ---------------------------------------- [20180106] With compatibility_level < 1, the Postfix SMTP server now warns for mail that would be blocked by the Postfix 2.10 smtpd_relay_restrictions feature, without blocking that mail. This extends the compatibility safety net for sites that upgrade from earlier Postfix versions (questions on the postfix-users list show there is a steady trickle). See COMPATIBILITY_README for details. Major changes - configuration ----------------------------- [20170617] The postconf command now warns about unknown parameter names in a Postfix database configuration file. As with other unknown parameter names, these warnings can help to find typos early. [20180113] New read-only service_name parameter that contains the master.cf service name of a Postfix daemon process (it that is empty in a non-daemon process). This can make Postfix SMTP server logging logging distinct by setting the syslog_name in master.cf with "-o syslog_name=postfix/$service_name" for the "submission" and "smtps" services, and can make Postfix SMTP client distinct by setting "-o syslog_name=postfix/$service_name" for the "relay" service. Major changes - container support --------------------------------- [20171218] Preliminary support to run Postfix in the foreground, with "postfix start-fg". This requires that Postfix multi-instance support is disabled. To receive Postfix syslog information on the container's host, mount the host's /dev/log socket inside the container (example: "docker run -v /dev/log:/dev/log ..."), and specify a distinct Postfix "syslog_name" prefix that identifies the logging from the Postfix instance. Postfix does not log systemd events. Major changes - database support --------------------------------- [20170617] The postconf command warns about unknown parameter names in a Postfix database configuration file. [20171227] The pgsql_table(5) hosts parameter now supports the postgresql:// URI syntax. Contributed by Magosányi Árpád. Major changes - header format ----------------------------- [20180010] This release changes the format of 'full name' information in Postfix-generated From: headers, when a local program such as /bin/mail submits a message without From: header. Postfix-generated From: headers with 'full name' information are now formatted as "From: name
" by default. Specify "header_from_format = obsolete" to get the earlier form "From: address (name)". See the postconf(5) manpage for more details. Major changes - invisible changes --------------------------------- [20170617] Additional paranoia in the VSTRING implementation: a null byte after the end of vstring buffers (this is a safety net so that C-style string operations won't scribble past the end); earlier detection of bad length and precision format string specifiers (these are the result of programming error, as Postfix format strings cannot be specified externally). Major changes - milter support ------------------------------ [20171223] Milter applications can now send RET and ENVID parameters in SMFIR_CHGFROM (change envelope sender) requests. Major changes - mixed IPv6/IPv4 support --------------------------------------- [20170505] Workaround for mail delivery problems when 1) both Postfix IPv6 and IPv4 support are enabled, 2) some destination announces more primary IPv6 MX addresses than primary IPv4 MX addresses, 3) the destination is unreachable over IPv6, and 4) Postfix runs into the smtp_mx_address_limit before it can try to deliver over IPv4. When both Postfix IPv6 and IPv4 support are enabled, the Postfix SMTP client will now relax MX preferences so that it can schedule similar numbers of IPv4 and IPv6 destination addresses. This ensures that an IPv6 connectivity problem will not prevent mail from being delivered over IPv4 (and vice versa). Specify "smtp_balance_inet_protocols = no" to disable this workaround. Major changes - xclient ----------------------- [20171218] The Postfix SMTP server now allows the XCLIENT command before STARTTLS when TLS is required. This is useful for servers that run behind a reverse proxy server such as nginx. This is the Postfix 3.2 (stable) release. The stable Postfix release is called postfix-3.2.x where 3=major release number, 2=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.3-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 3.0 or earlier, read RELEASE_NOTES-3.1 before proceeding. Invisible changes ----------------- In addition to the visible changes described below, there is an ongoing overhaul of low-level code. With each change come updated tests to ensure that future changes will not 'break' compatibility with past behavior. Major changes - address mapping ------------------------------- [Feature 20170128] Postfix 3.2 fixes the handling of address extensions with email addresses that contain spaces. For example, the virtual_alias_maps, canonical_maps, and smtp_generic_maps features now correctly propagate an address extension from "aa bb+ext"@@example.com to "cc dd+ext"@@other.example, instead of producing broken output. Major changes - header/body_checks ---------------------------------- [Feature 20161008] "PASS" and "STRIP" actions in header/body_checks. "STRIP" is similar to "IGNORE" but also logs the action, and "PASS" disables header, body, and Milter inspection for the remainder of the message content. Contributed by Hobbit. Major changes - log analysis ---------------------------- [Feature 20160330] The collate.pl script by Viktor Dukhovni for grouping Postfix logfile records into "sessions" based on queue ID and process ID information. It's in the auxiliary/collate directory of the Postfix source tree. Major changes - maps support ---------------------------- [Feature 20160527] Postfix 3.2 cidr tables support if/endif and negation (by prepending ! to a pattern), just like regexp and pcre tables. The primarily purpose is to improve readability of complex tables. See the cidr_table(5) manpage for syntax details. [Incompat 20160925] In the Postfix MySQL database client, the default option_group value has changed to "client", to enable reading of "client" option group settings in the MySQL options file. This fixes a "not found" problem with Postfix queries that contain UTF8-encoded non-ASCII text. Specify an empty option_group value (option_group =) to get backwards-compatible behavior. [Feature 20161217] Stored-procedure support for MySQL databases. Contributed by John Fawcett. See mysql_table(5) for instructions. [Feature 20170128] The postmap command, and the inline: and texthash: maps now support spaces in left-hand field of the lookup table "source text". Use double quotes (") around a left-hand field that contains spaces, and use backslash (\) to protect embedded quotes in a left-hand field. There is no change in the processing of the right-hand field. Major changes - milter support ------------------------------ [Feature 20160611] The Postfix SMTP server local IP address and port are available in the policy delegation protocol (attribute names: server_address, server_port), in the Milter protocol (macro names: {daemon_addr}, {daemon_port}), and in the XCLIENT protocol (attribute names: DESTADDR, DESTPORT). [Feature 20161024] smtpd_milter_maps support for per-client Milter configuration that overrides smtpd_milters, and that has the same syntax. A lookup result of "DISABLE" turns off Milter support. See MILTER_README.html for details. Major changes - policy delegation --------------------------------- [Feature 20160611] The Postfix SMTP server local IP address and port are available in the policy delegation protocol (attribute names: server_address, server_port), in the Milter protocol (macro names: {daemon_addr}, {daemon_port}), and in the XCLIENT protocol (attribute names: DESTADDR, DESTPORT). Major changes - postqueue ------------------------- [Incompat 20170129] The postqueue command no longer forces all message arrival times to be reported in UTC. To get the old behavior, set TZ=UTC in main.cf:import_environment (this override is not recommended, as it affects all Postfix utities and daemons). Major changes - safety ---------------------- [Incompat 20161227] For safety reasons, the sendmail -C option must specify an authorized directory: the default configuration directory, a directory that is listed in the default main.cf file with alternate_config_directories or multi_instance_directories, or the command must be invoked with root privileges (UID 0 and EUID 0). This mitigates a recurring problem with the PHP mail() function. Major changes - sasl -------------------- [Feature 20160625] The Postfix SMTP server now passes remote client and local server network address and port information to the Cyrus SASL library. Build with ``make makefiles "CCARGS=$CCARGS -DNO_IP_CYRUS_SASL_AUTH"'' for backwards compatibility. Major changes - smtputf8 ------------------------ [Feature 20161103] Postfix 3.2 disables the 'transitional' compatibility between the IDNA2003 and IDNA2008 standards for internationalized domain names (domain names beyond the limits of US-ASCII). This change makes Postfix behavior consistent with contemporary web browsers. It affects the handling of some corner cases such as German sz and Greek zeta. See http://unicode.org/cldr/utility/idna.jsp for more examples. Specify "enable_idna2003_compatibility = yes" to restore historical behavior (but keep in mind that the rest of the world may not make that same choice). Major changes - tls ------------------- [Feature 20160828] Fixes for deprecated OpenSSL 1.1.0 API features, so that Postfix will build without depending on backwards-compatibility support. [Incompat 20161204] Postfix 3.2 removes tentative features that were implemented before the DANE spec was finalized: - Support for certificate usage PKIX-EE(1), - The ability to disable digest agility (Postfix now behaves as if "tls_dane_digest_agility = on"), and - The ability to disable support for "TLSA 2 [01] [12]" records that specify the digest of a trust anchor (Postfix now behaves as if "tls_dane_trust_anchor_digest_enable = yes). [Feature 20161217] Postfix 3.2 enables elliptic curve negotiation with OpenSSL >= 1.0.2. This changes the default smtpd_tls_eecdh_grade setting to "auto", and introduces a new parameter tls_eecdh_auto_curves with the names of curves that may be negotiated. The default tls_eecdh_auto_curves setting is determined at compile time, and depends on the Postfix and OpenSSL versions. At runtime, Postfix will skip curve names that aren't supported by the OpenSSL library. Major changes - xclient ----------------------- [Feature 20160611] The Postfix SMTP server local IP address and port are available in the policy delegation protocol (attribute names: server_address, server_port), in the Milter protocol (macro names: {daemon_addr}, {daemon_port}), and in the XCLIENT protocol (attribute names: DESTADDR, DESTPORT). @ text @d25 2 a26 2 the MX service on TCP port 25, and smtpd(8) receives mail from MUAs on the submission service (TCP port 587) which requires client authentica- a66 1 RFC 3030 (CHUNKING without BINARYMIME) d73 1 a73 1 Problems and transactions are logged to syslogd(8) or postlogd(8). d79 2 a80 1 "after 220 server greeting" tests. d82 10 a91 6 The optional "after 220 server greeting" tests may result in unexpected delivery delays from senders that retry email delivery from a different IP address. Reason: after passing these tests a new client must dis- connect, and reconnect from the same IP address before it can deliver mail. See POSTSCREEN_README, section "Tests after the 220 SMTP server greeting", for a discussion. d94 2 a95 2 Changes to main.cf are not picked up automatically, as postscreen(8) processes may run for several hours. Use the command "postfix reload" d98 1 a98 1 The text below provides only a parameter summary. See postconf(5) for d101 5 a105 5 NOTE: Some postscreen(8) parameters implement stress-dependent behav- ior. This is supported only when the default parameter value is stress-dependent (that is, it looks like ${stress?{X}:{Y}}, or it is the $name of an smtpd parameter with a stress-dependent default). Other parameters always evaluate as if the stress parameter value is d114 3 a116 3 Lookup tables, indexed by the remote SMTP client address, with case insensitive lists of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the d120 2 a121 2 A case insensitive list of EHLO keywords (pipelining, starttls, auth, etc.) that the postscreen(8) server will not send in the a128 6 Available in Postfix version 3.4 and later: postscreen_reject_footer_maps ($smtpd_reject_footer_maps) Optional lookup table for information that is appended after a 4XX or 5XX postscreen(8) server response. d402 3 a404 13 A prefix that is prepended to the process name in syslog records, so that, for example, "smtpd" becomes "prefix/smtpd". Available in Postfix 3.3 and later: service_name (read-only) The master.cf service name of a Postfix daemon process. Available in Postfix 3.5 and later: info_log_address_format (external) The email address form that will be used in non-debug logging (info, warning, etc.). a409 1 postlogd(8), Postfix logging @ 1.1.1.7 log @Import Postfix-3.7.3 (previous version was 3.5.2) This is the Postfix 3.7 (stable) release. The stable Postfix release is called postfix-3.7.x where 3=major release number, 7=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.8-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 3.5 or earlier, read RELEASE_NOTES-3.6 before proceeding. License change --------------- This software is distributed with a dual license: in addition to the historical IBM Public License 1.0, it is now also distributed with the more recent Eclipse Public License 2.0. Recipients can choose to take the software under the license of their choice. Those who are more comfortable with the IPL can continue with that license. Bugfix for messages not delivered after "warning: Unexpected record type 'X' ============================================================================ Due to a bug introduced in Postfix 3.7.0, a message could falsely be flagged as corrupt with "warning: Unexpected record type 'X'". Such messages were moved to the "corrupt" queue directory, where they may still be found. See below for instructions to deal with these falsely flagged messages. This could happen for messages with 5000 or more recipients, or with fewer recipients on a busy mail server. The problem was first reported by Frank Brendel, reproduced by John Alex. A file in the "corrupt" queue directory may be inspected with the command "postcat /var/spool/postfix/corrupt/. If delivery of the file is still desired, the file can be moved back to /var/spool/postfix/incoming after updating Postfix and executing "postfix reload". Major changes - configuration ----------------------------- [Feature 20210605] Support to inline the content of small cidr:, pcre:, and regexp: tables in Postfix parameter values. Example: smtpd_forbidden_commands = CONNECT GET POST regexp:{{/^[^A-Z]/ Thrash}} This is the new smtpd_forbidden_commands default value. It will immediately disconnect a remote SMTP client when a command does not start with a letter (a-z or A-Z). The basic syntax is: /etc/postfix/main.cf: parameter = .. map-type:{ { rule-1 }, { rule-2 } .. } .. /etc/postfix/master.cf: .. -o { parameter = .. map-type:{ { rule-1 }, { rule-2 } .. } .. } .. where map-type is one of cidr, pcre, or regexp. Postfix ignores whitespace after '{' and before '}', and writes each rule as one text line to a nameless in-memory file: in-memory file: rule-1 rule-2 .. Postfix parses the result as if it is a file in /etc/postfix. Note: if a rule contains $, specify $$ to keep Postfix from trying to do $name expansion as it evaluates the parameter value. Major changes - lmdb support ---------------------------- [Feature 20210605] Overhauled the LMDB client's error handling, and added integration tests for future-proofing. There are no visible changes in documented behavior. Major changes - logging ----------------------- [Feature 20210815] To make the maillog_file feature more useful, the postlog(1) command is now set-gid postdrop, so that unprivileged programs can use it to write logging through the postlogd(8) daemon. This required hardening the postlog(1) command against privilege escalation attacks. DO NOT turn on the set-gid bit with older postlog(1) implementations. Major changes - pcre2 support ----------------------------- [Feature 20211127] Support for the pcre2 library (the legacy pcre library is no longer maintained). The Postfix build procedure automatically detects if the pcre2 library is installed, and if it is unavailable, the Postfix build procedure will detect if the legacy pcre library is installed. See PCRE_README if you need to build Postfix with a specific library. Visible differences: some error messages may have a different text, and the 'X' pattern flag is no longer supported with pcre2. Major changes - security ------------------------ [Feature 20220102] Postfix programs now randomize the initial state of in-memory hash tables, to defend against hash collision attacks involving a large number of attacker-chosen lookup keys. Presently, the only known opportunity for such attacks involves remote SMTP client IPv6 addresses in the anvil(8) service. The attack would require making hundreds of short-lived connections per second from thousands of different IP addresses, because the anvil(8) service drops inactive counters after 100s. Other in-memory hash tables with attacker-chosen lookup keys are by design limited in size. The fix is cheap, and therefore implemented for all Postfix in-memory hash tables. Problem reported by Pascal Junod. [Feature 20211030] The postqueue command now sanitizes non-printable characters (such as newlines) in strings before they are formatted as json or as legacy output. These outputs are piped into other programs that are run by administrative users. This closes a hypothetical opportunity for privilege escalation. [Feature 20210815] Updated defense against remote clients or servers that 'trickle' SMTP or LMTP traffic, based on per-request deadlines and minimum data rates. Per-request deadlines: The new {smtpd,smtp,lmtp}_per_request_deadline parameters replace {smtpd,smtp,lmtp}_per_record_deadline, with backwards compatible default settings. This defense is enabled by default in the Postfix SMTP server in case of overload. The new smtpd_per_record_deadline parameter limits the combined time for the Postfix SMTP server to receive a request and to send a response, while the new {smtp,lmtp}_per_record_deadline parameters limit the combined time for the Postfix SMTP or LMTP client to send a request and to receive a response. Minimum data rates: The new smtpd_min_data_rate parameter enforces a minimum plaintext data transfer rate for DATA and BDAT requests, but only when smtpd_per_record_deadline is enabled. After a read operation transfers N plaintext bytes (possibly after TLS decryption), and after the DATA or BDAT request deadline is decreased by the elapsed time of that read operation, the DATA or BDAT request deadline is increased by N/smtpd_min_data_rate seconds. However, the deadline is never increased beyond the smtpd_timeout value. The default minimum data rate is 500 (bytes/second) but is still subject to change. The new {smtp,lmtp}_min_data_rate parameters enforce the corresponding minimum DATA transfer rates for the Postfix SMTP and LMTP client. Major changes - tls support --------------------------- [Cleanup 20220121] The new tlsproxy_client_security_level parameter replaces tlsproxy_client_level, and the new tlsproxy_client_policy_maps parameter replaces tlsproxy_client_policy. This is for consistent parameter naming (tlsproxy_client_xxx corresponds to smtp_tls_xxx). This change was made with backwards-compatible default settings. [Feature 20210926] Postfix was updated to support OpenSSL 3.0.0 API features, and to work around OpenSSL 3.0.0 bit-rot (avoid using deprecated API features). Other code health ----------------- [typos] Typo fixes by raf. [pre-release checks] Added pre-release checks to detect a) new typos in documentation and source-code comments, b) missing entries in the postfix-files file (some documentation would not be installed), c) missing rules in the postlink script (some text would not have a hyperlink in documentation), and d) missing map-based $parameter names in the proxy_read_maps default value (the proxymap daemon would not automatically authorize some proxied maps). [memory stream] Improved support for memory-based streams made it possible to inline small cidr:, pcre:, and regexp: maps in Postfix parameter values, and to eliminate some ad-hoc code that converted tlsproxy(8) protocol data to or from serialized form. ************************************************************************* This is the Postfix 3.6 (stable) release. The stable Postfix release is called postfix-3.6.x where 3=major release number, 6=minor release number, x=patchlevel. The stable release never changes except for patches that address bugs or emergencies. Patches change the patchlevel and the release date. New features are developed in snapshot releases. These are called postfix-3.7-yyyymmdd where yyyymmdd is the release date (yyyy=year, mm=month, dd=day). Patches are never issued for snapshot releases; instead, a new snapshot is released. The mail_release_date configuration parameter (format: yyyymmdd) specifies the release date of a stable release or snapshot release. If you upgrade from Postfix 3.4 or earlier, read RELEASE_NOTES-3.5 before proceeding. License change --------------- This software is distributed with a dual license: in addition to the historical IBM Public License 1.0, it is now also distributed with the more recent Eclipse Public License 2.0. Recipients can choose to take the software under the license of their choice. Those who are more comfortable with the IPL can continue with that license. Major changes - internal protocol identification ------------------------------------------------ [Incompat 20200920] Internal protocols have changed. You need to "postfix stop" before updating, or before backing out to an earlier release, otherwise long-running daemons (pickup, qmgr, verify, tlsproxy, postscreen) may fail to communicate with the rest of Postfix, causing mail delivery delays until Postfix is restarted. This change does not affect message files in Postfix queue directories, only the communication between running Postfix programs. With this change, every Postfix internal service, including the postdrop command, announces the name of its protocol before doing any other I/O. Every Postfix client program, including the Postfix sendmail command, will verify that the protocol name matches what it is supposed to be. The purpose of this change is to produce better error messages, for example, when someone configures the discard daemon as a bounce service in master.cf, or vice versa. This change may break third-party programs that implement a Postfix-internal protocol such as qpsmtpd. Such programs have never been supported. Fortunately, this will be an easy fix: look at the first data from the cleanup daemon: if it is a protocol announcement, you're talking to Postfix 3.6 or later. That's the only real change. Major changes - tls ------------------- [Incompat 20200705] The minimum supported OpenSSL version is 1.1.1, which will reach the end of life by 2023-09-11. Postfix 3.6 is expected to reach the end of support in 2025. Until then, Postfix will be updated as needed for compatibility with OpenSSL. The default fingerprint digest has changed from md5 to sha256 (Postfix 3.6 with compatibility_level >= 3.6). With a lower compatibility_level setting, Postfix defaults to using md5, and logs a warning when a Postfix configuration specifies no explicit digest type. Export-grade Diffie-Hellman key exchange is no longer supported, and the tlsproxy_tls_dh512_param_file parameter is ignored, [Feature 20200906] The tlstype.pl helper script by Viktor Dukhovni reports TLS information per message delivery. This processes output from the collate.pl script. See auxiliary/collate/README.tlstype and auxiliary/collate/tlstype.pl. Major changes - compatibility level ----------------------------------- [Feature 20210109] Starting with Postfix version 3.6, the compatibility level is "3.6". In future Postfix releases, the compatibility level will be the Postfix version that introduced the last incompatible change. The level is formatted as 'major.minor.patch', where 'patch' is usually omitted and defaults to zero. Earlier compatibility levels are 0, 1 and 2. This also introduces main.cf and master.cf support for the <=level, " which matches an empty sender address, and the "@@domain" wildcard pattern. More information about those can be found in the postconf(5) manpage. Example: /etc/postfix/main.cf: # Allow root and postfix full control, anyone else can only # send mail as themselves. Use "uid:" followed by the numerical # UID when the UID has no entry in the UNIX password file. local_login_sender_maps = inline:{ { root = *}, { postfix = * } }, pcre:/etc/postfix/login_senders /etc/postfix/login_senders: # Allow both the bare username and the user@@domain forms. /(.+)/ $1 $1@@example.com Major changes - order of relay and recipient restrictions --------------------------------------------------------- [Incompat 20210131] With smtpd_relay_before_recipient_restrictions=yes, the Postfix SMTP server will evaluate smtpd_relay_restrictions before smtpd_recipient_restrictions. This is the default behavior with compatibility_level >= 3.6. This change makes the implemented behavior consistent with existing documentation. There is a backwards-compatibility warning that allows users to freeze historical behavior. See COMPATIBILITY_README for details. Major changes - respectful logging ---------------------------------- [Feature 20210220] Postfix version 3.6 deprecates terminology that implies white is better than black. Instead, Postfix prefers 'allowlist', 'denylist', and variations on those words. This change affects Postfix documentation, and postscreen parameters and logging. To keep the old postscreen logging set "respectful_logging = no" in main.cf. Noel Jones assisted with the initial transition. Changes in documentation ------------------------ Postfix documentation was updated to use 'allowlist', 'denylist', etc. These documentation changes do not affect Postfix behavior. Changes in parameter names -------------------------- The following postscreen parameters replace names that contain 'blacklist' or 'whitelist': postscreen_allowlist_interfaces postscreen_denylist_action postscreen_dnsbl_allowlist_threshold These new parameters have backwards-compatible default settings that support the old parameter names, so that the name change should not affect Postfix behavior. This means that existing management tools that use the old parameter names should keep working as before. This compatibility safety net may break when some management tools use the new parameter names, and some use the old names, such that different tools will disagree on how Postfix works. Changes in logging ------------------ The following logging replaces forms that contain 'blacklist' or 'whitelist': postfix/postscreen[pid]: ALLOWLIST VETO [address]:port postfix/postscreen[pid]: ALLOWLISTED [address]:port postfix/postscreen[pid]: DENYLISTED [address]:port To avoid breaking logfile analysis tools, Postfix keeps logging the old forms by default, as long as the compatibility_level parameter setting is less than 3.6, and the respectful_logging parameter is not explicitly configured. As a reminder, Postfix will log the following: postfix/postscreen[pid]: Using backwards-compatible default setting respectful_logging=no for client [address]:port To keep logging the old form, make the setting "respectful_logging = no" permanent in main.cf, for example: # postconf "respectful_logging = no" # postfix reload To stop the reminder, configure the respectful_logging parameter to "yes" or "no", or configure "compatibility_level = 3.6". Major changes - threaded bounces -------------------------------- [Feature 20201205] Support for threaded bounces. This allows mail readers to present a non-delivery, delayed delivery, or successful delivery notification in the same email thread as the original message. Unfortunately, this also makes it easy for users to mistakenly delete the whole email thread (all related messages), instead of deleting only the delivery status notification. To enable, specify "enable_threaded_bounces = yes". Other changes - smtpd_sasl_mechanism_list ----------------------------------------- [Feature 20200906] The smtpd_sasl_mechanism_list parameter (default: !external, static:rest) prevents confusing errors when a SASL backend announces EXTERNAL support which Postfix does not support. Other changes - delivery logging -------------------------------- [Incompat 20200531] Postfix delivery agents now log an explicit record when delegating delivery to a different Postfix delivery agent. For example, with "best_mx_transport = local", an SMTP delivery agent will now log when a recipient will be delivered locally. This makes the delegating delivery agent visible, where it would otherwise have remained invisible, which would complicate troubleshooting. postfix/smtp[pid]: queueid: passing to transport=local This will usually be followed by logging for an actual delivery: postfix/local[pid]: queueid: to=, relay=local, ... Other examples: the local delivery agent will log a record that it defers mailbox delivery through mailbox_transport or through fallback_transport. Other changes - error logging ----------------------------- [Incompat 20200531] Postfix programs will now log "Application error" instead of "Success" or "Unknown error: 0" when an operation fails with errno == 0, i.e., the error originates from non-kernel code. Other changes - dns lookups --------------------------- [Feature 20200509] The threadsafe resolver API (res_nxxx() calls) is now the default, not because the API is threadsafe, but because this is the API where new features are being added. To build old style, build with: make makefiles CCARGS="-DNO_RES_NCALLS..." This is the default for systems that are known not to support the threadsafe resolver API. @ text @d4 1 a4 1 d31 1 a31 1 postscreen(8) maintains a temporary allowlist for clients that have d33 1 a33 1 allowlisted, postscreen(8) hands off the connection immediately to a d58 14 a71 14 RFC 821 (SMTP protocol) RFC 1123 (Host requirements) RFC 1652 (8bit-MIME transport) RFC 1869 (SMTP service extensions) RFC 1870 (Message Size Declaration) RFC 1985 (ETRN command) RFC 2034 (SMTP Enhanced Status Codes) RFC 2821 (SMTP protocol) Not: RFC 2920 (SMTP Pipelining) RFC 3030 (CHUNKING without BINARYMIME) RFC 3207 (STARTTLS command) RFC 3461 (SMTP DSN Extension) RFC 3463 (Enhanced Status Codes) RFC 5321 (SMTP protocol, including multi-line 220 banners) a130 5 Available in Postfix 3.6 and later: respectful_logging (see 'postconf -d' output) Avoid logging that implies white is better than black. d155 1 a155 1 PERMANENT ALLOW/DENYLIST TEST d157 1 a157 1 If a client is permanently allowlisted, the client will be handed off d161 1 a161 1 Permanent allow/denylist for remote SMTP client IP addresses. d164 3 a166 1 Renamed to postscreen_denylist_action in Postfix 3.6. d170 1 a170 1 addresses, it can refuse to allowlist clients that connect to a backup d177 3 a179 1 Renamed to postscreen_allowlist_interfaces in Postfix 3.6. d202 1 a202 1 Optional list of DNS allow/denylist domains, filters and weight d234 3 a236 1 Renamed to postscreen_dnsbl_allowlist_threshold in Postfix 3.6. a242 17 Available in Postfix version 3.6 and later: postscreen_denylist_action (ignore) The action that postscreen(8) takes when a remote SMTP client is permanently denylisted with the postscreen_access_list parame- ter. postscreen_allowlist_interfaces (static:all) A list of local postscreen(8) server IP addresses where a non-allowlisted remote SMTP client can obtain postscreen(8)'s temporary allowlist status. postscreen_dnsbl_allowlist_threshold (0) Allow a remote SMTP client to skip "before" and "after 220 greeting" protocol tests, based on its combined DNSBL score as defined with the postscreen_dnsbl_sites parameter. d245 3 a247 3 servername" greeting. If a client passes all tests during this phase, it will receive a 4XX response to all RCPT TO commands. After the client reconnects, it will be allowed to talk directly to a Postfix d251 2 a252 2 The action that postscreen(8) takes when a remote SMTP client sends a bare newline character, that is, a newline not preceded d256 1 a256 1 Enable "bare newline" SMTP protocol tests in the postscreen(8) d271 1 a271 1 The action that postscreen(8) takes when a remote SMTP client d279 1 a279 1 The action that postscreen(8) takes when a remote SMTP client d284 1 a284 1 Enable "pipelining" SMTP protocol tests in the postscreen(8) d296 1 a296 1 porary allowlist entry before it is removed. d304 2 a305 2 The maximum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a d309 2 a310 2 The minimum amount of time that postscreen(8) will use the result from a successful DNS-based reputation test before a d327 1 a327 1 Upon input, long lines are chopped up into pieces of at most d332 1 a332 1 How many simultaneous connections any remote SMTP client is d336 1 a336 1 The limit on the total number of commands per SMTP session for d340 1 a340 1 The time limit to read an entire command line with d344 1 a344 1 The number of clients that can be waiting for service from a d348 2 a349 2 The number of non-allowlisted clients that can be waiting for a decision whether they will receive service from a real Postfix d353 2 a354 2 How much time a postscreen(8) process may take to respond to a remote SMTP client command or to perform a cache operation d367 1 a367 1 These parameters are supported for compatibility with smtpd(8) legacy d371 1 a371 1 Opportunistic TLS: announce STARTTLS support to remote SMTP d380 1 a380 1 The default location of the Postfix main.cf and master.cf con- d384 1 a384 1 The maximal number of digits after the decimal point when log- d391 1 a391 1 The maximum amount of time that an idle Postfix daemon process d404 1 a404 1 A prefix that is prepended to the process name in syslog d414 2 a415 2 info_log_address_format (external) The email address form that will be used in non-debug logging d421 1 a421 1 dnsblog(8), DNS allow/denylist logger d434 1 a434 1 Many ideas in postscreen(8) were explored in earlier work by Michael @ 1.1.1.7.2.1 log @Pullup the following, requested by kim in ticket #518: external/ibm-public/postfix/dist/html/postfix-doc.css up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-double-history up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-spell-history up to 1.1.1.1 external/ibm-public/postfix/dist/mantools/check-table-proto up to 1.1.1.1 external/ibm-public/postfix/dist/proto/stop.double-history up to 1.1.1.1 external/ibm-public/postfix/dist/proto/stop.spell-history up to 1.1.1.1 external/ibm-public/postfix/dist/src/postconf/test71.ref up to 1.1.1.1 external/ibm-public/postfix/dist/src/util/mkmap_db.c up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap.h up to 1.2 external/ibm-public/postfix/dist/src/util/inet_addr_sizes.c up to 1.2 external/ibm-public/postfix/dist/src/util/inet_addr_sizes.h up to 1.2 external/ibm-public/postfix/dist/src/util/inet_prefix_top.c up to 1.2 external/ibm-public/postfix/dist/src/util/inet_prefix_top.h up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap_cdb.c up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap_dbm.c up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap_fail.c up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap_lmdb.c up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap_open.c up to 1.2 external/ibm-public/postfix/dist/src/util/mkmap_sdbm.c up to 1.2 external/ibm-public/postfix/dist/RELEASE_NOTES-3.7 up to 1.1.1.1 external/ibm-public/postfix/dist/src/global/mkmap.h delete external/ibm-public/postfix/dist/src/global/mkmap_cdb.c delete external/ibm-public/postfix/dist/src/global/mkmap_db.c delete external/ibm-public/postfix/dist/src/global/mkmap_dbm.c delete external/ibm-public/postfix/dist/src/global/mkmap_fail.c delete external/ibm-public/postfix/dist/src/global/mkmap_lmdb.c delete external/ibm-public/postfix/dist/src/global/mkmap_open.c delete external/ibm-public/postfix/dist/src/global/mkmap_sdbm.c delete external/ibm-public/postfix/dist/HISTORY up to 1.1.1.29 external/ibm-public/postfix/dist/INSTALL up to 1.1.1.9 external/ibm-public/postfix/dist/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/RELEASE_NOTES up to 1.1.1.17 external/ibm-public/postfix/dist/WISHLIST up to 1.1.1.2 external/ibm-public/postfix/dist/makedefs up to 1.16 external/ibm-public/postfix/dist/postfix-env.sh up to 1.1.1.2 external/ibm-public/postfix/dist/README_FILES/ADDRESS_CLASS_README up to 1.1.1.2 external/ibm-public/postfix/dist/README_FILES/BASIC_CONFIGURATION_README up to 1.1.1.6 external/ibm-public/postfix/dist/README_FILES/DEBUG_README up to 1.1.1.5 external/ibm-public/postfix/dist/README_FILES/FORWARD_SECRECY_README up to 1.1.1.5 external/ibm-public/postfix/dist/README_FILES/INSTALL up to 1.10 external/ibm-public/postfix/dist/README_FILES/IPV6_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/MAILLOG_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/MILTER_README up to 1.1.1.9 external/ibm-public/postfix/dist/README_FILES/MYSQL_README up to 1.1.1.5 external/ibm-public/postfix/dist/README_FILES/PGSQL_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/QSHAPE_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/RELEASE_NOTES up to 1.1.1.17 external/ibm-public/postfix/dist/README_FILES/SASL_README up to 1.1.1.11 external/ibm-public/postfix/dist/README_FILES/SMTPD_POLICY_README up to 1.1.1.7 external/ibm-public/postfix/dist/README_FILES/SMTPD_PROXY_README up to 1.1.1.6 external/ibm-public/postfix/dist/README_FILES/SQLITE_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/STANDARD_CONFIGURATION_README up to 1.1.1.6 external/ibm-public/postfix/dist/README_FILES/TLS_README up to 1.14 external/ibm-public/postfix/dist/conf/aliases up to 1.1.1.5 external/ibm-public/postfix/dist/conf/main.cf up to 1.10 external/ibm-public/postfix/dist/conf/master.cf up to 1.11 external/ibm-public/postfix/dist/conf/postfix-files up to 1.9 external/ibm-public/postfix/dist/conf/postfix-script up to 1.4 external/ibm-public/postfix/dist/conf/postfix-tls-script up to 1.5 external/ibm-public/postfix/dist/conf/virtual up to 1.1.1.6 external/ibm-public/postfix/dist/html/ADDRESS_CLASS_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/ADDRESS_REWRITING_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/ADDRESS_VERIFICATION_README.html up to 1.11 external/ibm-public/postfix/dist/html/BACKSCATTER_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/BASIC_CONFIGURATION_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/BDAT_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/BUILTIN_FILTER_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/CDB_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/COMPATIBILITY_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/CONNECTION_CACHE_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/CONTENT_INSPECTION_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/DATABASE_README.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/DB_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/DEBUG_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/DSN_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/ETRN_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/FILTER_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/FORWARD_SECRECY_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/INSTALL.html up to 1.10 external/ibm-public/postfix/dist/html/IPV6_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/LDAP_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/LINUX_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/LMDB_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/LOCAL_RECIPIENT_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/MAILDROP_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/MAILLOG_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/MEMCACHE_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/MILTER_README.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/MULTI_INSTANCE_README.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/MYSQL_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/NFS_README.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/OVERVIEW.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/PACKAGE_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/PCRE_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/PGSQL_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/POSTSCREEN_3_5_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/html/POSTSCREEN_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/QSHAPE_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/RESTRICTION_CLASS_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/SASL_README.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/SCHEDULER_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/SMTPD_ACCESS_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/SMTPD_POLICY_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/SMTPD_PROXY_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/SMTPUTF8_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/SOHO_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/SQLITE_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/STANDARD_CONFIGURATION_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/STRESS_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/TLS_LEGACY_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/TLS_README.html up to 1.15 external/ibm-public/postfix/dist/html/TUNING_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/UUCP_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/VERP_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/VIRTUAL_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/XCLIENT_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/XFORWARD_README.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/access.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/aliases.5.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/anvil.8.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/bounce.5.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/bounce.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/canonical.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/cidr_table.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/cleanup.8.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/defer.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/discard.8.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/dnsblog.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/error.8.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/flush.8.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/generic.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/header_checks.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/index.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/ldap_table.5.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/lmdb_table.5.html up to 1.1.1.4 external/ibm-public/postfix/dist/html/lmtp.8.html up to 1.1.1.12 external/ibm-public/postfix/dist/html/local.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/mailq.1.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/makedefs.1.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/master.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/master.8.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/memcache_table.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/mysql_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/newaliases.1.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/nisplus_table.5.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/oqmgr.8.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/pcre_table.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/pgsql_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/pickup.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/pipe.8.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/postalias.1.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/postcat.1.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/postconf.1.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/postconf.5.html up to 1.19 external/ibm-public/postfix/dist/html/postdrop.1.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/postfix-manuals.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/postfix-tls.1.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/postfix-wrapper.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/postfix.1.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/postkick.1.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/postlock.1.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/postlog.1.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/postlogd.8.html up to 1.1.1.3 external/ibm-public/postfix/dist/html/postmap.1.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/postmulti.1.html up to 1.1.1.7 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external/ibm-public/postfix/dist/src/smtpd/smtpd_sasl_glue.c up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_server.in up to 1.1.1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_server.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/tls/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/src/tls/tls.h up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_client.c up to 1.13 external/ibm-public/postfix/dist/src/tls/tls_dane.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_dh.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_fprint.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_misc.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_proxy.h up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_misc.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_print.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_scan.c up to 1.4 external/ibm-public/postfix/dist/src/tls/tls_server.c up to 1.12 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy.c up to 1.6 external/ibm-public/postfix/dist/src/util/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/util/argv.c up to 1.4 external/ibm-public/postfix/dist/src/util/argv.h up to 1.4 external/ibm-public/postfix/dist/src/util/attr.h up to 1.5 external/ibm-public/postfix/dist/src/util/clean_env.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict.h up to 1.5 external/ibm-public/postfix/dist/src/util/dict_cache.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_cdb.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_cidr.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_db.h up to 1.4 external/ibm-public/postfix/dist/src/util/dict_dbm.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_fail.h up to 1.2 external/ibm-public/postfix/dist/src/util/dict_lmdb.h up to 1.3 external/ibm-public/postfix/dist/src/util/dict_open.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_pcre.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_regexp.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_sdbm.h up to 1.2 external/ibm-public/postfix/dist/src/util/hash_fnv.c up to 1.3 external/ibm-public/postfix/dist/src/util/hash_fnv.h up to 1.3 external/ibm-public/postfix/dist/src/util/htable.c up to 1.4 external/ibm-public/postfix/dist/src/util/inet_connect.c up to 1.3 external/ibm-public/postfix/dist/src/util/make_dirs.c up to 1.2 external/ibm-public/postfix/dist/src/util/match_list.c up to 1.3 external/ibm-public/postfix/dist/src/util/mystrtok.c up to 1.4 external/ibm-public/postfix/dist/src/util/mystrtok.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/sock_addr.c up to 1.3 external/ibm-public/postfix/dist/src/util/sock_addr.h up to 1.2 external/ibm-public/postfix/dist/src/util/split_nameval.c up to 1.2 external/ibm-public/postfix/dist/src/util/stringops.h up to 1.5 external/ibm-public/postfix/dist/src/util/sys_defs.h up to 1.14 external/ibm-public/postfix/dist/src/util/unix_send_fd.c up to 1.8 external/ibm-public/postfix/dist/src/util/valid_hostname.c up to 1.3 external/ibm-public/postfix/dist/src/util/valid_hostname.h up to 1.2 external/ibm-public/postfix/dist/src/xsasl/xsasl_cyrus_server.c up to 1.4 external/ibm-public/postfix/lib/global/Makefile up to 1.10 external/ibm-public/postfix/lib/util/Makefile up to 1.11 doc/3RDPARTY (apply patch) Update Postfix to 3.8.4. @ text @a4 1 d179 2 a180 4 postscreen_allowlist_interfaces (static:all) A list of local postscreen(8) server IP addresses where a non-allowlisted remote SMTP client can obtain postscreen(8)'s temporary allowlist status. d198 3 a200 3 A mapping from an actual DNSBL domain name which includes a secret password, to the DNSBL domain name that postscreen will reply with when it rejects mail. d203 2 a204 2 Optional list of patterns with DNS allow/denylist domains, fil- ters and weight factors. @ 1.1.1.8 log @Import Postfix 3.8.4 (last was 3.7.3) December 22, 2023: 3.8.4/3.7.9 ============================== Security: this release adds support to defend against an email spoofing attack (SMTP smuggling) on recipients at a Postfix server. For background, see https://www.postfix.org/smtp-smuggling.html. Sites concerned about SMTP smuggling attacks should enable this feature on Internet-facing Postfix servers. For compatibility with non-standard clients, Postfix by default excludes clients in mynetworks from this countermeasure. The recommended settings are: # Optionally disconnect remote SMTP clients that send bare newlines, # but allow local clients with non-standard SMTP implementations # such as netcat, fax machines, or load balancer health checks. # smtpd_forbid_bare_newline = yes smtpd_forbid_bare_newline_exclusions = $mynetworks The smtpd_forbid_bare_newline feature is disabled by default. November 1, 2023: 3.8.3/3.7.8 ============================= Bugfix (defect introduced Postfix 2.5, date 20080104): the Postfix SMTP server was waiting for a client command instead of replying immediately, after a client certificate verification error in TLS wrappermode. Reported by Andreas Kinzler. Usability: the Postfix SMTP server (finally) attempts to log the SASL username after authentication failure. In Postfix logging, this appends ", sasl_username=xxx" after the reason for SASL authentication failure. The logging replaces an unavailable reason with "(reason unavailable)", and replaces an unavailable sasl_username with "(unavailable)". Based on code by Jozsef Kadlecsik. Compatibility bugfix (defect introduced: Postfix 2.11, date 20130405): in forward_path, the expression ${recipient_delimiter} would expand to an empty string when a recipient address had no recipient delimiter. The compatibility fix is to use a configured recipient delimiter value instead. Reported by Tod A. Sandman. September 1, 2023: 3.8.2/3.7.7 ============================== Bugfix (defect introduced: Postfix alpha, 19980207): the valid_hostname() check in the Postfix DNS client library was blocking unusual but legitimate wildcard names (*.name) in some DNS lookup results and lookup requests. Examples: name class/type result *.one.example IN CNAME *.other.example *.other.example IN A 10.0.0.1 *.other.example IN TLSA ..certificate info... Such syntax is blesed in RFC 1034 section 4.3.3. Bugfix (defect introduced: Postfix 3.0, 20140218): when an address verification probe fails during or after an opportunistic TLS handshake, don't enforce a minimum time-in-queue before falling back to plaintext. Problem reported by Serg. June 5, 2023: 3.8.1/3.7.6 ========================= Optional: harden a Postfix SMTP server against remote SMTP clients that violate RFC 2920 (or 5321) command pipelining constraints. With "smtpd_forbid_unauth_pipelining = yes", the server disconnects a client immediately, after responding with "554 5.5.0 Error: SMTP protocol synchronization" and after logging "improper command pipelining" with the unexpected remote SMTP client input. This feature is disabled by default in Postfix 3.5-3.8 to avoid breaking home-grown utilities, but it is enabled by default in Postfix 3.9. A similar feature is enabled by default in the Exim SMTP server. Optional: some OS distributions crank up TLS security to 11, and in doing so increase the number of plaintext email deliveries. This introduces basic OpenSSL configuration file support that may be used to override OS-level settings. Details are in the postconf(5) manpage under tls_config_file and tls_config_name. Bugfix (defect introduced: Postfix 1.0): the command "postconf .. name=v1 .. name=v2 .." (multiple instances of the same parameter name) created multiple main.cf name=value entries with the same parameter name. It now logs a warning and skips the earlier name(s) and value(s). Found during code maintenance. Bugfix (defect introduced: Postfix 3.3): the command "postconf -M name1/type1='name2 type2 ...'" died with a segmentation violation when the request matched multiple master.cf entries. The master.cf file was not damaged. Problem reported by SATOH Fumiyasu. Bugfix (defect introduced: Postfix 2.11): the command "postconf -M name1/type1='name2 type2 ...'" could add a service definition to master.cf that conflicted with an already existing service definition. It now replaces all existing service definitions that match the service pattern 'name1/type1' or the service name and type in 'name2 type2 ...' with a single service definition 'name2 type2 ...'. Problem reported by SATOH Fumiyasu. Bugfix (defect introduced: Postfix 3.8) the posttls-finger command could access uninitialized memory when reconnecting. This also fixes a malformed warning message when a destination contains ":service" information. Reported by Thomas Korbar. Bugfix (defect introduced: Postfix 3.2): the MySQL client could return "not found" instead of "error" (for example, resulting in a 5XX SMTP status instead of 4XX) during the time that all MySQL server connections were turned down after error. Found during code maintenance. File: global/dict_mysql.c. This was already fixed in Postfix 3.4-3.7. April 18, 2023: 3.7.5 ===================== Bugfix (problem introduced in Postfix 3.5): check_ccert_access did not handle inline map specifications. Report and fix by Sean Gallagher. Bugfix (problem introduced in Postfix 3.4): the posttls-finger command failed to detect that a connection was resumed in the case that a server did not return a certificate. Fix by Viktor Dukhovni. Workaround: OpenSSL 3.x EVP_get_cipherbyname() can return lazily-bound handles. Postfix now checks that the expected functionality will be available instead of failing later. Fix by Viktor Dukhovni. Safety: the long form "{ name = value }" in import_environment or export_environment is not documented (with spaces around the '='), but it was silently accepted, and it was stored in the process environment as the invalid form "name = value", thus not setting or overriding an entry for "name". This form is now stored as the expected "name=value". Found during code maintenance. Bugfix (problem introduced in Postfix 3.2): the MySQL client could return "not found" instead of "error" (for example, resulting in a 5XX SMTP status instead of 4XX) during the time that all MySQL server connections were turned down after error. Found during code maintenance. April 17, 2023: 3.8.0 ===================== Support to look up DNS SRV records in the Postfix SMTP/LMTP client, Based on code by Tomas Korbar (Red Hat). For example, with "use_srv_lookup = submission" and "relayhost = example.com:submission", the Postfix SMTP client will look up DNS SRV records for _submission._tcp.example.com, and will relay email through the hosts and ports that are specified with those records. TLS obsolescence: Postfix now treats the "export" and "low" cipher grade settings as "medium". The "export" and "low" grades are no longer supported in OpenSSL 1.1.1, the minimum version required in Postfix 3.6.0 and later. Also, Postfix default settings now exclude deprecated or unused ciphers (SEED, IDEA, 3DES, RC2, RC4, RC5), digest (MD5), key exchange algorithms (DH, ECDH), and public key algorithm (DSS). Attack resistance: the Postfix SMTP server can now aggregate smtpd_client_*_rate and smtpd_client_*_count statistics by network block instead of by IP address, to raise the bar against a memory exhaustion attack in the anvil(8) server; Postfix TLS support unconditionally disables TLS renegotiation in the middle of an SMTP connection, to avoid a CPU exhaustion attack. The PostgreSQL client encoding is now configurable with the "encoding" Postfix configuration file attribute. The default is "UTF8". Previously the encoding was hard-coded as "LATIN1", which is not useful in the context of SMTP. The postconf command now warns for #comment in or after a Postfix parameter value. Postfix programs do not support #comment after other text, and treat that as input. January 12, 2023: 3.7.4 ======================= Workaround: with OpenSSL 3 and later always turn on SSL_OP_IGNORE_UNEXPECTED_EOF, to avoid warning messages and missed opportunities for TLS session reuse. This is safe because the SMTP protocol implements application-level framing, and is therefore not affected by TLS truncation attacks. Fix by Viktor Dukhovni. Workaround: OpenSSL 3.x EVP_get_digestbyname() can return lazily-bound handles for digest implementations. In sufficiently hostile configurations, Postfix could mistakenly believe that a digest algorithm is available, and fail when it is not. A similar workaround may be needed for EVP_get_cipherbyname(). Fix by Viktor Dukhovni. Bugfix (bug introduced in Postfix 2.11): the checkok() macro in tls/tls_fprint.c evaluated its argument unconditionally; it should evaluate the argument only if there was no prior error. Found during code review. Bugfix (bug introduced in Postfix 2.8): postscreen died with a segmentation violation when postscreen_dnsbl_threshold < 1. It should reject such input with a fatal error instead. Discovered by Benny Pedersen. Bitrot: fixes for linker warnings from newer Darwin (MacOS) versions. Viktor Dukhovni. Portability: Linux 6 support. Added missing documentation that cidr:, pcre: and regexp: tables support inline specification only in Postfix 3.7 and later. @ text @a4 1 d179 2 a180 4 postscreen_allowlist_interfaces (static:all) A list of local postscreen(8) server IP addresses where a non-allowlisted remote SMTP client can obtain postscreen(8)'s temporary allowlist status. d198 3 a200 3 A mapping from an actual DNSBL domain name which includes a secret password, to the DNSBL domain name that postscreen will reply with when it rejects mail. d203 2 a204 2 Optional list of patterns with DNS allow/denylist domains, fil- ters and weight factors. @ 1.1.1.8.2.1 log @Sync with HEAD @ text @d2 1 a2 1 "https://www.w3.org/TR/html4/loose.dtd"> d10 1 a10 1 NAME d13 1 a13 1 SYNOPSIS d16 1 a16 1 DESCRIPTION d53 1 a53 1 SECURITY d58 1 a58 1 STANDARDS d74 1 a74 1 DIAGNOSTICS d77 1 a77 1 BUGS d90 1 a90 1 CONFIGURATION PARAMETERS d105 1 a105 1 COMPATIBILITY CONTROLS d137 1 a137 1 TROUBLE SHOOTING CONTROLS d150 1 a150 1 BEFORE-POSTSCREEN PROXY AGENT d172 1 a172 1 MAIL EXCHANGER POLICY TESTS d185 1 a185 1 BEFORE 220 GREETING TESTS d262 1 a262 1 AFTER 220 GREETING TESTS d306 1 a306 1 CACHE CONTROLS d318 2 a319 3 The amount of time that postscreen(8) remembers that a client IP address passed a "bare newline" SMTP protocol test, before it address is required to pass that test again. d323 3 a325 3 The maximum amount of time that postscreen(8) remembers that a client IP address passed a DNS-based reputation test, before it is required to pass that test again. d328 3 a330 3 The minimum amount of time that postscreen(8) remembers that a client IP address passed a DNS-based reputation test, before it is required to pass that test again. d333 2 a334 3 The amount of time that postscreen(8) remembers that a client IP address passed a PREGREET test, before it is required to pass that test again. d337 2 a338 3 The amount of time that postscreen(8) remembers that a client IP address passed a "non_smtp_command" SMTP protocol test, before it is required to pass that test again. d341 2 a342 3 The amount of time that postscreen(8) remembers that a client IP address passed a "pipelining" SMTP protocol test, before it is required to pass that test again. d344 1 a344 1 RESOURCE CONTROLS d376 1 a376 1 STARTTLS CONTROLS d385 1 a385 1 OBSOLETE STARTTLS SUPPORT CONTROLS d397 1 a397 1 MISCELLANEOUS CONTROLS d437 1 a437 1 SEE ALSO d444 1 a444 1 README FILES d447 1 a447 1 LICENSE d450 1 a450 1 HISTORY @ 1.1.1.8.2.2 log @Sync with HEAD @ text @d225 1 a225 1 postscreen_greet_wait (normal: 6s, overload: 2s) d362 1 a362 1 postscreen_command_time_limit (normal: 300s, overload: 10s) d408 1 a408 1 ging delay values. a470 3 Wietse Venema porcupine.org @ 1.1.1.9 log @Import postfix-3.10.1 (previous was 3.8.4) Summary: Postfix 3.9 (July 2022): This release focused on enhancing the TLS (Transport Layer Security) capabilities of Postfix. It introduced support for TLSv1.3, allowing for more secure and efficient encrypted communications. Additionally, improvements were made to the handling of TLSA records, which are used in DNS-based Authentication of Named Entities (DANE) to associate TLS certificates with domain names. Postfix 3.10 (July 2023): This version brought significant updates to Postfix's SMTP (Simple Mail Transfer Protocol) functionalities. It added support for the SMTPUTF8 extension, enabling the use of UTF-8 encoding in email addresses and headers, which is essential for internationalization. The release also included performance optimizations, particularly in the handling of large mail queues, and introduced new configuration parameters to provide administrators with finer control over mail processing. The changes are described more in detail in: 3.10 changes: RELEASE_NOTES 3.9 changes: RELEASE_NOTES_3.9 3.8 changes: RELEASE_NOTES_3.8 @ text @d2 1 a2 1 "https://www.w3.org/TR/html4/loose.dtd"> d10 1 a10 1 NAME d13 1 a13 1 SYNOPSIS d16 1 a16 1 DESCRIPTION d53 1 a53 1 SECURITY d58 1 a58 1 STANDARDS d74 1 a74 1 DIAGNOSTICS d77 1 a77 1 BUGS d90 1 a90 1 CONFIGURATION PARAMETERS d105 1 a105 1 COMPATIBILITY CONTROLS d137 1 a137 1 TROUBLE SHOOTING CONTROLS d150 1 a150 1 BEFORE-POSTSCREEN PROXY AGENT d172 1 a172 1 MAIL EXCHANGER POLICY TESTS d185 1 a185 1 BEFORE 220 GREETING TESTS d262 1 a262 1 AFTER 220 GREETING TESTS d306 1 a306 1 CACHE CONTROLS d318 2 a319 3 The amount of time that postscreen(8) remembers that a client IP address passed a "bare newline" SMTP protocol test, before it address is required to pass that test again. d323 3 a325 3 The maximum amount of time that postscreen(8) remembers that a client IP address passed a DNS-based reputation test, before it is required to pass that test again. d328 3 a330 3 The minimum amount of time that postscreen(8) remembers that a client IP address passed a DNS-based reputation test, before it is required to pass that test again. d333 2 a334 3 The amount of time that postscreen(8) remembers that a client IP address passed a PREGREET test, before it is required to pass that test again. d337 2 a338 3 The amount of time that postscreen(8) remembers that a client IP address passed a "non_smtp_command" SMTP protocol test, before it is required to pass that test again. d341 2 a342 3 The amount of time that postscreen(8) remembers that a client IP address passed a "pipelining" SMTP protocol test, before it is required to pass that test again. d344 1 a344 1 RESOURCE CONTROLS d376 1 a376 1 STARTTLS CONTROLS d385 1 a385 1 OBSOLETE STARTTLS SUPPORT CONTROLS d397 1 a397 1 MISCELLANEOUS CONTROLS d437 1 a437 1 SEE ALSO d444 1 a444 1 README FILES d447 1 a447 1 LICENSE d450 1 a450 1 HISTORY @ 1.1.1.9.2.1 log @Pull up the following, requested by christos in ticket #283: external/ibm-public/postfix//dist/README_FILES/NON_BERKELEYDB_README up to external/ibm-public/postfix//dist/README_FILES/REQUIRETLS_README up to external/ibm-public/postfix//dist/conf/postfix-non-bdb-script up to external/ibm-public/postfix//dist/html/NON_BERKELEYDB_README.html up to external/ibm-public/postfix//dist/html/REQUIRETLS_README.html up to external/ibm-public/postfix//dist/html/nbdb_reindexd.8.html up to external/ibm-public/postfix//dist/html/postfix-non-bdb.1.html up to external/ibm-public/postfix//dist/man/man1/postfix-non-bdb.1 up to external/ibm-public/postfix//dist/man/man8/nbdb_reindexd.8 up to external/ibm-public/postfix//dist/mantools/check-proxy-type-table up to external/ibm-public/postfix//dist/proto/NON_BERKELEYDB_README.html up to external/ibm-public/postfix//dist/proto/REQUIRETLS_README.html up to external/ibm-public/postfix//dist/src/cleanup/cleanup_message_test.c up to external/ibm-public/postfix//dist/src/global/ehlo_mask_test.c up to external/ibm-public/postfix//dist/src/global/nbdb_clnt.c up to external/ibm-public/postfix//dist/src/global/allowed_prefix.c up to external/ibm-public/postfix//dist/src/global/allowed_prefix.h up to external/ibm-public/postfix//dist/src/global/allowed_prefix_test.c up to external/ibm-public/postfix//dist/src/global/dict_sqlite_test.c up to external/ibm-public/postfix//dist/src/global/haproxy_srvr_test.c up to external/ibm-public/postfix//dist/src/global/login_sender_match_test.c up to external/ibm-public/postfix//dist/src/global/nbdb_clnt.h up to external/ibm-public/postfix//dist/src/global/nbdb_redirect.c up to external/ibm-public/postfix//dist/src/global/nbdb_redirect.h up to external/ibm-public/postfix//dist/src/global/nbdb_redirect_test.c up to external/ibm-public/postfix//dist/src/global/nbdb_surrogate.c up to external/ibm-public/postfix//dist/src/global/nbdb_surrogate.h up to external/ibm-public/postfix//dist/src/global/nbdb_surrogate_test.c up to external/ibm-public/postfix//dist/src/global/nbdb_util.c up to external/ibm-public/postfix//dist/src/global/nbdb_util.h up to external/ibm-public/postfix//dist/src/global/nbdb_util_test.c up to external/ibm-public/postfix//dist/src/global/pol_stats.c up to external/ibm-public/postfix//dist/src/global/pol_stats.h up to external/ibm-public/postfix//dist/src/global/pol_stats_test.c up to external/ibm-public/postfix//dist/src/postalias/mode_conflict_test.in up to external/ibm-public/postfix//dist/src/postalias/mode_conflict_test.ref up to external/ibm-public/postfix//dist/src/postconf/test77-main.cf up to external/ibm-public/postfix//dist/src/postconf/test77.ref up to external/ibm-public/postfix//dist/src/postconf/test78.ref up to external/ibm-public/postfix//dist/src/postconf/test79.ref up to external/ibm-public/postfix//dist/src/postconf/test80.ref up to external/ibm-public/postfix//dist/src/postconf/test81.ref up to external/ibm-public/postfix//dist/src/postconf/test82.ref up to external/ibm-public/postfix//dist/src/postconf/test83.ref up to external/ibm-public/postfix//dist/src/postconf/test84.ref up to external/ibm-public/postfix//dist/src/postconf/test85.ref up to external/ibm-public/postfix//dist/src/postconf/test86.ref up to external/ibm-public/postfix//dist/src/postconf/test87.ref up to external/ibm-public/postfix//dist/src/postconf/test91.ref up to external/ibm-public/postfix//dist/src/postmap/mode_conflict_test.in up to external/ibm-public/postfix//dist/src/postmap/mode_conflict_test.ref up to external/ibm-public/postfix//dist/src/postmulti/fake_strcmp.c up to external/ibm-public/postfix//dist/src/smtp/smtp_reqtls_policy.c up to external/ibm-public/postfix//dist/src/smtp/smtp_reqtls_policy.h up to external/ibm-public/postfix//dist/src/smtp/smtp_reqtls_policy_test.c up to external/ibm-public/postfix//dist/src/smtp/smtp_tls_policy_test.c up to external/ibm-public/postfix//dist/src/smtpd/smtpd_peer_test.c up to external/ibm-public/postfix//dist/src/util/dict_union_test.c up to external/ibm-public/postfix//dist/src/util/hash_fnv_test.c up to external/ibm-public/postfix//dist/src/util/mac_midna.h up to external/ibm-public/postfix//dist/src/util/normalize_v4mapped_addr.c up to external/ibm-public/postfix//dist/src/util/dict_debug.h up to external/ibm-public/postfix//dist/src/util/dict_debug_test.ref up to external/ibm-public/postfix//dist/src/util/dict_debug_test.sh up to external/ibm-public/postfix//dist/src/util/dict_pipe_test.c up to external/ibm-public/postfix//dist/src/util/mac_midna.c up to external/ibm-public/postfix//dist/src/util/normalize_v4mapped_addr.h up to external/ibm-public/postfix//dist/src/util/normalize_v4mapped_addr_test.c up to external/ibm-public/postfix//dist/src/util/ossl_digest.c up to external/ibm-public/postfix//dist/src/util/ossl_digest.h up to external/ibm-public/postfix//dist/src/util/ossl_digest_test.c up to external/ibm-public/postfix//dist/src/util/wrap_stat.c up to external/ibm-public/postfix//dist/src/util/wrap_stat.h up to external/ibm-public/postfix//dist/src/nbdb_reindexd/Makefile.in up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_index_as.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_index_as.h up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_index_as_test.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_process.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_process.h up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_process_test.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_reindexd.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_reindexd.h up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_safe.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_safe.h up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_safe_test.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_sniffer.c up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_sniffer.h up to external/ibm-public/postfix//dist/src/nbdb_reindexd/nbdb_sniffer_test.c up to external/ibm-public/postfix//dist/src/testing/Makefile.in up to external/ibm-public/postfix//dist/src/testing/dict_test_helper.c up to external/ibm-public/postfix//dist/src/testing/dict_test_helper.h up to external/ibm-public/postfix//dist/src/testing/mock_dict.c up to external/ibm-public/postfix//dist/src/testing/mock_dict.h up to external/ibm-public/postfix//dist/src/testing/mock_open_as.c up to external/ibm-public/postfix//dist/src/testing/mock_open_as.h up to external/ibm-public/postfix//dist/src/testing/mock_spawn_command.c up to external/ibm-public/postfix//dist/src/testing/mock_spawn_command.h up to external/ibm-public/postfix//dist/src/testing/mock_stat.c up to external/ibm-public/postfix//dist/src/testing/mock_stat.h up to external/ibm-public/postfix//dist/src/testing/msg_capture.c up to external/ibm-public/postfix//dist/src/testing/msg_capture.h up to external/ibm-public/postfix//dist/src/testing/nosleep.c up to external/ibm-public/postfix//dist/TESTING up to external/ibm-public/postfix//dist/RELEASE_NOTES-3.10 up to external/ibm-public/postfix//dist/src/global/ehlo_mask.in delete external/ibm-public/postfix//dist/src/global/ehlo_mask.ref delete external/ibm-public/postfix//dist/src/util/dict_pipe_test.in delete external/ibm-public/postfix//dist/src/util/dict_pipe_test.ref delete external/ibm-public/postfix//dist/src/util/dict_union_test.in delete external/ibm-public/postfix//dist/src/util/dict_union_test.ref delete external/ibm-public/postfix/Makefile.inc up to 1.32 external/ibm-public/postfix/dist/HISTORY up to 1.1.1.31 external/ibm-public/postfix/dist/INSTALL up to 1.1.1.11 external/ibm-public/postfix/dist/Makefile.in up to 1.1.1.12 external/ibm-public/postfix/dist/RELEASE_NOTES up to 1.1.1.19 external/ibm-public/postfix/dist/makedefs up to 1.18 external/ibm-public/postfix/dist/README_FILES/AAAREADME up to 1.1.1.8 external/ibm-public/postfix/dist/README_FILES/CDB_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/COMPATIBILITY_README up to 1.1.1.5 external/ibm-public/postfix/dist/README_FILES/DATABASE_README up to 1.1.1.11 external/ibm-public/postfix/dist/README_FILES/DEPRECATION_README up to 1.1.1.2 external/ibm-public/postfix/dist/README_FILES/INSTALL up to 1.12 external/ibm-public/postfix/dist/README_FILES/MULTI_INSTANCE_README up to 1.1.1.8 external/ibm-public/postfix/dist/README_FILES/MYSQL_README up to 1.1.1.7 external/ibm-public/postfix/dist/README_FILES/OVERVIEW up to 1.1.1.7 external/ibm-public/postfix/dist/README_FILES/RELEASE_NOTES up to 1.1.1.19 external/ibm-public/postfix/dist/README_FILES/SASL_README up to 1.1.1.13 external/ibm-public/postfix/dist/README_FILES/SMTPUTF8_README up to 1.1.1.5 external/ibm-public/postfix/dist/README_FILES/SOHO_README up to 1.1.1.6 external/ibm-public/postfix/dist/README_FILES/STANDARD_CONFIGURATION_README up to 1.1.1.8 external/ibm-public/postfix/dist/README_FILES/TLSRPT_README up to 1.1.1.2 external/ibm-public/postfix/dist/README_FILES/UUCP_README up to 1.1.1.3 external/ibm-public/postfix/dist/README_FILES/VIRTUAL_README up to 1.1.1.4 external/ibm-public/postfix/dist/README_FILES/XCLIENT_README up to 1.1.1.5 external/ibm-public/postfix/dist/conf/access up to 1.1.1.10 external/ibm-public/postfix/dist/conf/aliases up to 1.1.1.7 external/ibm-public/postfix/dist/conf/canonical up to 1.1.1.7 external/ibm-public/postfix/dist/conf/generic up to 1.1.1.6 external/ibm-public/postfix/dist/conf/main.cf up to 1.12 external/ibm-public/postfix/dist/conf/postfix-files up to 1.11 external/ibm-public/postfix/dist/conf/postfix-script up to 1.6 external/ibm-public/postfix/dist/conf/postfix-tls-script up to 1.6 external/ibm-public/postfix/dist/conf/relocated up to 1.1.1.5 external/ibm-public/postfix/dist/conf/transport up to 1.1.1.6 external/ibm-public/postfix/dist/conf/virtual up to 1.1.1.8 external/ibm-public/postfix/dist/html/CDB_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/COMPATIBILITY_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/DATABASE_README.html up to 1.1.1.12 external/ibm-public/postfix/dist/html/DEPRECATION_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/html/INSTALL.html up to 1.12 external/ibm-public/postfix/dist/html/MULTI_INSTANCE_README.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/MYSQL_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/Makefile.in up to 1.1.1.9 external/ibm-public/postfix/dist/html/OVERVIEW.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/SASL_README.html up to 1.1.1.13 external/ibm-public/postfix/dist/html/SMTPUTF8_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/SOHO_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/STANDARD_CONFIGURATION_README.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/TLSRPT_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/html/UUCP_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/VIRTUAL_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/XCLIENT_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/access.5.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/aliases.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/bounce.8.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/canonical.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/cidr_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/cleanup.8.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/defer.8.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/discard.8.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/error.8.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/generic.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/index.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/ldap_table.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/lmdb_table.5.html up to 1.1.1.6 external/ibm-public/postfix/dist/html/lmtp.8.html up to 1.1.1.14 external/ibm-public/postfix/dist/html/mailq.1.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/makedefs.1.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/memcache_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/mongodb_table.5.html up to 1.1.1.2 external/ibm-public/postfix/dist/html/mysql_table.5.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/newaliases.1.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/nisplus_table.5.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/oqmgr.8.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/pcre_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/pgsql_table.5.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/postalias.1.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/postconf.1.html up to 1.1.1.13 external/ibm-public/postfix/dist/html/postconf.5.html up to 1.22 external/ibm-public/postfix/dist/html/postdrop.1.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/postfix-manuals.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/postfix-tls.1.html up to 1.1.1.5 external/ibm-public/postfix/dist/html/postfix.1.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/postlog.1.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/postmap.1.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/postmulti.1.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/postqueue.1.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/postscreen.8.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/posttls-finger.1.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/proxymap.8.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/qmgr.8.html up to 1.1.1.11 external/ibm-public/postfix/dist/html/regexp_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/relocated.5.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/sendmail.1.html up to 1.1.1.10 external/ibm-public/postfix/dist/html/smtp.8.html up to 1.1.1.14 external/ibm-public/postfix/dist/html/smtpd.8.html up to 1.1.1.15 external/ibm-public/postfix/dist/html/socketmap_table.5.html up to 1.1.1.7 external/ibm-public/postfix/dist/html/sqlite_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/tcp_table.5.html up to 1.1.1.8 external/ibm-public/postfix/dist/html/trace.8.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/transport.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/virtual.5.html up to 1.1.1.9 external/ibm-public/postfix/dist/html/virtual.8.html up to 1.1.1.9 external/ibm-public/postfix/dist/man/Makefile.in up to 1.1.1.9 external/ibm-public/postfix/dist/man/man1/makedefs.1 up to 1.5 external/ibm-public/postfix/dist/man/man1/postalias.1 up to 1.5 external/ibm-public/postfix/dist/man/man1/postconf.1 up to 1.6 external/ibm-public/postfix/dist/man/man1/postdrop.1 up to 1.6 external/ibm-public/postfix/dist/man/man1/postfix-tls.1 up to 1.4 external/ibm-public/postfix/dist/man/man1/postfix.1 up to 1.8 external/ibm-public/postfix/dist/man/man1/postlog.1 up to 1.7 external/ibm-public/postfix/dist/man/man1/postmap.1 up to 1.5 external/ibm-public/postfix/dist/man/man1/postmulti.1 up to 1.5 external/ibm-public/postfix/dist/man/man1/postqueue.1 up to 1.6 external/ibm-public/postfix/dist/man/man1/posttls-finger.1 up to 1.7 external/ibm-public/postfix/dist/man/man1/sendmail.1 up to 1.6 external/ibm-public/postfix/dist/man/man5/access.5 up to 1.6 external/ibm-public/postfix/dist/man/man5/aliases.5 up to 1.7 external/ibm-public/postfix/dist/man/man5/canonical.5 up to 1.6 external/ibm-public/postfix/dist/man/man5/cidr_table.5 up to 1.7 external/ibm-public/postfix/dist/man/man5/generic.5 up to 1.6 external/ibm-public/postfix/dist/man/man5/ldap_table.5 up to 1.7 external/ibm-public/postfix/dist/man/man5/lmdb_table.5 up to 1.4 external/ibm-public/postfix/dist/man/man5/memcache_table.5 up to 1.3 external/ibm-public/postfix/dist/man/man5/mongodb_table.5 up to 1.3 external/ibm-public/postfix/dist/man/man5/mysql_table.5 up to 1.7 external/ibm-public/postfix/dist/man/man5/nisplus_table.5 up to 1.3 external/ibm-public/postfix/dist/man/man5/pcre_table.5 up to 1.6 external/ibm-public/postfix/dist/man/man5/pgsql_table.5 up to 1.7 external/ibm-public/postfix/dist/man/man5/postconf.5 up to 1.21 external/ibm-public/postfix/dist/man/man5/regexp_table.5 up to 1.6 external/ibm-public/postfix/dist/man/man5/relocated.5 up to 1.5 external/ibm-public/postfix/dist/man/man5/socketmap_table.5 up to 1.5 external/ibm-public/postfix/dist/man/man5/sqlite_table.5 up to 1.5 external/ibm-public/postfix/dist/man/man5/tcp_table.5 up to 1.4 external/ibm-public/postfix/dist/man/man5/transport.5 up to 1.5 external/ibm-public/postfix/dist/man/man5/virtual.5 up to 1.7 external/ibm-public/postfix/dist/man/man8/bounce.8 up to 1.6 external/ibm-public/postfix/dist/man/man8/cleanup.8 up to 1.6 external/ibm-public/postfix/dist/man/man8/discard.8 up to 1.4 external/ibm-public/postfix/dist/man/man8/error.8 up to 1.4 external/ibm-public/postfix/dist/man/man8/oqmgr.8 up to 1.4 external/ibm-public/postfix/dist/man/man8/postscreen.8 up to 1.7 external/ibm-public/postfix/dist/man/man8/proxymap.8 up to 1.5 external/ibm-public/postfix/dist/man/man8/qmgr.8 up to 1.5 external/ibm-public/postfix/dist/man/man8/smtp.8 up to 1.7 external/ibm-public/postfix/dist/man/man8/smtpd.8 up to 1.7 external/ibm-public/postfix/dist/man/man8/virtual.8 up to 1.5 external/ibm-public/postfix/dist/mantools/check-postconf-unimplemented up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-history up to 1.1.1.2 external/ibm-public/postfix/dist/mantools/check-spell-proto-html up to 1.1.1.3 external/ibm-public/postfix/dist/mantools/dehtml up to 1.1.1.3 external/ibm-public/postfix/dist/mantools/postconf2man up to 1.1.1.7 external/ibm-public/postfix/dist/mantools/postlink up to 1.1.1.15 external/ibm-public/postfix/dist/mantools/srctoman up to 1.1.1.5 external/ibm-public/postfix/dist/proto/CDB_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/proto/COMPATIBILITY_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/proto/DATABASE_README.html up to 1.1.1.12 external/ibm-public/postfix/dist/proto/DEPRECATION_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/INSTALL.html up to 1.12 external/ibm-public/postfix/dist/proto/MULTI_INSTANCE_README.html up to 1.1.1.10 external/ibm-public/postfix/dist/proto/MYSQL_README.html up to 1.1.1.7 external/ibm-public/postfix/dist/proto/Makefile.in up to 1.1.1.9 external/ibm-public/postfix/dist/proto/OVERVIEW.html up to 1.1.1.8 external/ibm-public/postfix/dist/proto/SASL_README.html up to 1.1.1.13 external/ibm-public/postfix/dist/proto/SMTPUTF8_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/proto/STANDARD_CONFIGURATION_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/proto/TLSRPT_README.html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/UUCP_README.html up to 1.1.1.5 external/ibm-public/postfix/dist/proto/VIRTUAL_README.html up to 1.1.1.6 external/ibm-public/postfix/dist/proto/XCLIENT_README.html up to 1.1.1.8 external/ibm-public/postfix/dist/proto/access up to 1.1.1.10 external/ibm-public/postfix/dist/proto/aliases up to 1.1.1.8 external/ibm-public/postfix/dist/proto/canonical up to 1.1.1.7 external/ibm-public/postfix/dist/proto/cidr_table up to 1.1.1.8 external/ibm-public/postfix/dist/proto/generic up to 1.1.1.6 external/ibm-public/postfix/dist/proto/index.html up to 1.1.1.2 external/ibm-public/postfix/dist/proto/ldap_table up to 1.1.1.9 external/ibm-public/postfix/dist/proto/lmdb_table up to 1.1.1.4 external/ibm-public/postfix/dist/proto/memcache_table up to 1.1.1.5 external/ibm-public/postfix/dist/proto/mongodb_table up to 1.1.1.2 external/ibm-public/postfix/dist/proto/mysql_table up to 1.1.1.10 external/ibm-public/postfix/dist/proto/nisplus_table up to 1.1.1.4 external/ibm-public/postfix/dist/proto/pcre_table up to 1.1.1.8 external/ibm-public/postfix/dist/proto/pgsql_table up to 1.1.1.10 external/ibm-public/postfix/dist/proto/postconf.html.prolog up to 1.1.1.7 external/ibm-public/postfix/dist/proto/postconf.man.prolog up to 1.1.1.5 external/ibm-public/postfix/dist/proto/postconf.proto up to 1.21 external/ibm-public/postfix/dist/proto/regexp_table up to 1.1.1.8 external/ibm-public/postfix/dist/proto/relocated up to 1.1.1.5 external/ibm-public/postfix/dist/proto/socketmap_table up to 1.1.1.5 external/ibm-public/postfix/dist/proto/sqlite_table up to 1.1.1.6 external/ibm-public/postfix/dist/proto/stop up to 1.1.1.9 external/ibm-public/postfix/dist/proto/stop.double-cc up to 1.1.1.4 external/ibm-public/postfix/dist/proto/stop.double-history up to 1.1.1.3 external/ibm-public/postfix/dist/proto/stop.double-install-proto-text up to 1.1.1.3 external/ibm-public/postfix/dist/proto/stop.double-proto-html up to 1.1.1.4 external/ibm-public/postfix/dist/proto/stop.spell-cc up to 1.1.1.4 external/ibm-public/postfix/dist/proto/stop.spell-history up to 1.1.1.3 external/ibm-public/postfix/dist/proto/stop.spell-proto-html up to 1.1.1.4 external/ibm-public/postfix/dist/proto/tcp_table up to 1.1.1.5 external/ibm-public/postfix/dist/proto/transport up to 1.1.1.6 external/ibm-public/postfix/dist/proto/virtual up to 1.1.1.8 external/ibm-public/postfix/dist/src/bounce/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/bounce/bounce.c up to 1.6 external/ibm-public/postfix/dist/src/bounce/bounce_notify_service.c up to 1.4 external/ibm-public/postfix/dist/src/bounce/bounce_notify_util.c up to 1.6 external/ibm-public/postfix/dist/src/bounce/bounce_notify_verp.c up to 1.4 external/ibm-public/postfix/dist/src/bounce/bounce_one_service.c up to 1.4 external/ibm-public/postfix/dist/src/bounce/bounce_trace_service.c up to 1.4 external/ibm-public/postfix/dist/src/bounce/bounce_warn_service.c up to 1.4 external/ibm-public/postfix/dist/src/cleanup/Makefile.in up to 1.1.1.11 external/ibm-public/postfix/dist/src/cleanup/cleanup.c up to 1.10 external/ibm-public/postfix/dist/src/cleanup/cleanup.h up to 1.12 external/ibm-public/postfix/dist/src/cleanup/cleanup_api.c up to 1.6 external/ibm-public/postfix/dist/src/cleanup/cleanup_bounce.c up to 1.4 external/ibm-public/postfix/dist/src/cleanup/cleanup_init.c up to 1.9 external/ibm-public/postfix/dist/src/cleanup/cleanup_message.c up to 1.6 external/ibm-public/postfix/dist/src/cleanup/cleanup_milter.c up to 1.7 external/ibm-public/postfix/dist/src/cleanup/cleanup_out_recipient.c up to 1.6 external/ibm-public/postfix/dist/src/cleanup/cleanup_state.c up to 1.6 external/ibm-public/postfix/dist/src/discard/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/discard/discard.c up to 1.4 external/ibm-public/postfix/dist/src/dns/dns.h up to 1.8 external/ibm-public/postfix/dist/src/dns/dns_lookup.c up to 1.10 external/ibm-public/postfix/dist/src/error/Makefile.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/error/error.c up to 1.4 external/ibm-public/postfix/dist/src/global/Makefile.in up to 1.1.1.12 external/ibm-public/postfix/dist/src/global/abounce.c up to 1.5 external/ibm-public/postfix/dist/src/global/ascii_header_text.c up to 1.3 external/ibm-public/postfix/dist/src/global/ascii_header_text.h up to 1.3 external/ibm-public/postfix/dist/src/global/bounce.c up to 1.5 external/ibm-public/postfix/dist/src/global/bounce.h up to 1.3 external/ibm-public/postfix/dist/src/global/cleanup_strflags.c up to 1.3 external/ibm-public/postfix/dist/src/global/cleanup_user.h up to 1.5 external/ibm-public/postfix/dist/src/global/config_known_tcp_ports.c up to 1.3 external/ibm-public/postfix/dist/src/global/data_redirect.c up to 1.3 external/ibm-public/postfix/dist/src/global/defer.c up to 1.5 external/ibm-public/postfix/dist/src/global/defer.h up to 1.3 external/ibm-public/postfix/dist/src/global/deliver_pass.c up to 1.5 external/ibm-public/postfix/dist/src/global/dict_ldap.c up to 1.7 external/ibm-public/postfix/dist/src/global/dict_memcache.c up to 1.4 external/ibm-public/postfix/dist/src/global/dict_mongodb.c up to 1.3 external/ibm-public/postfix/dist/src/global/dict_mysql.c up to 1.6 external/ibm-public/postfix/dist/src/global/dict_pgsql.c up to 1.6 external/ibm-public/postfix/dist/src/global/dict_proxy.c up to 1.4 external/ibm-public/postfix/dist/src/global/dict_sqlite.c up to 1.6 external/ibm-public/postfix/dist/src/global/dict_sqlite.h up to 1.2 external/ibm-public/postfix/dist/src/global/dsn_util.c up to 1.2 external/ibm-public/postfix/dist/src/global/ehlo_mask.c up to 1.4 external/ibm-public/postfix/dist/src/global/ehlo_mask.h up to 1.4 external/ibm-public/postfix/dist/src/global/haproxy_srvr.c up to 1.5 external/ibm-public/postfix/dist/src/global/haproxy_srvr.h up to 1.3 external/ibm-public/postfix/dist/src/global/header_opts.c up to 1.4 external/ibm-public/postfix/dist/src/global/header_opts.h up to 1.4 external/ibm-public/postfix/dist/src/global/log_adhoc.c up to 1.4 external/ibm-public/postfix/dist/src/global/log_adhoc.h up to 1.2 external/ibm-public/postfix/dist/src/global/login_sender_match.c up to 1.3 external/ibm-public/postfix/dist/src/global/mail_conf.c up to 1.5 external/ibm-public/postfix/dist/src/global/mail_conf.h up to 1.4 external/ibm-public/postfix/dist/src/global/mail_params.c up to 1.7 external/ibm-public/postfix/dist/src/global/mail_params.h up to 1.21 external/ibm-public/postfix/dist/src/global/mail_proto.h up to 1.7 external/ibm-public/postfix/dist/src/global/mail_version.h up to 1.8 external/ibm-public/postfix/dist/src/global/maps.c up to 1.6 external/ibm-public/postfix/dist/src/global/mime_garb3.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/global/mime_state.c up to 1.4 external/ibm-public/postfix/dist/src/global/mime_state.h up to 1.2 external/ibm-public/postfix/dist/src/global/mynetworks.c up to 1.3 external/ibm-public/postfix/dist/src/global/namadr_list.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/global/namadr_list.ref up to 1.1.1.6 external/ibm-public/postfix/dist/src/global/own_inet_addr.c up to 1.3 external/ibm-public/postfix/dist/src/global/pipe_command.c up to 1.3 external/ibm-public/postfix/dist/src/global/post_mail.c up to 1.6 external/ibm-public/postfix/dist/src/global/rec_type.h up to 1.5 external/ibm-public/postfix/dist/src/global/reject_deliver_request.c up to 1.3 external/ibm-public/postfix/dist/src/global/rfc2047_code.c up to 1.3 external/ibm-public/postfix/dist/src/global/rfc2047_code.h up to 1.3 external/ibm-public/postfix/dist/src/global/sendopts.c up to 1.3 external/ibm-public/postfix/dist/src/global/sent.c up to 1.4 external/ibm-public/postfix/dist/src/global/sent.h up to 1.3 external/ibm-public/postfix/dist/src/global/server_acl.c up to 1.5 external/ibm-public/postfix/dist/src/global/trace.c up to 1.4 external/ibm-public/postfix/dist/src/global/trace.h up to 1.2 external/ibm-public/postfix/dist/src/global/verify.c up to 1.5 external/ibm-public/postfix/dist/src/global/verify.h up to 1.2 external/ibm-public/postfix/dist/src/local/Makefile.in up to 1.1.1.10 external/ibm-public/postfix/dist/src/local/forward.c up to 1.6 external/ibm-public/postfix/dist/src/local/local.c up to 1.6 external/ibm-public/postfix/dist/src/local/local.h up to 1.4 external/ibm-public/postfix/dist/src/master/Makefile.in up to 1.1.1.9 external/ibm-public/postfix/dist/src/master/event_server.c up to 1.5 external/ibm-public/postfix/dist/src/master/multi_server.c up to 1.5 external/ibm-public/postfix/dist/src/milter/milter8.c up to 1.7 external/ibm-public/postfix/dist/src/milter/test-milter.c up to 1.5 external/ibm-public/postfix/dist/src/oqmgr/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/oqmgr/qmgr.c up to 1.4 external/ibm-public/postfix/dist/src/oqmgr/qmgr_bounce.c up to 1.2 external/ibm-public/postfix/dist/src/oqmgr/qmgr_defer.c up to 1.2 external/ibm-public/postfix/dist/src/oqmgr/qmgr_message.c up to 1.6 external/ibm-public/postfix/dist/src/pipe/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/pipe/pipe.c up to 1.6 external/ibm-public/postfix/dist/src/postalias/Makefile.in up to 1.1.1.8 external/ibm-public/postfix/dist/src/postalias/postalias.c up to 1.7 external/ibm-public/postfix/dist/src/postcat/postcat.c up to 1.6 external/ibm-public/postfix/dist/src/postconf/Makefile.in up to 1.1.1.13 external/ibm-public/postfix/dist/src/postconf/extract.awk up to 1.1.1.7 external/ibm-public/postfix/dist/src/postconf/postconf.c up to 1.6 external/ibm-public/postfix/dist/src/postconf/postconf.h up to 1.6 external/ibm-public/postfix/dist/src/postconf/postconf_builtin.c up to 1.5 external/ibm-public/postfix/dist/src/postconf/postconf_dbms.c up to 1.7 external/ibm-public/postfix/dist/src/postconf/postconf_edit.c up to 1.4 external/ibm-public/postfix/dist/src/postconf/postconf_lookup.c up to 1.5 external/ibm-public/postfix/dist/src/postconf/postconf_main.c up to 1.5 external/ibm-public/postfix/dist/src/postconf/postconf_master.c up to 1.9 external/ibm-public/postfix/dist/src/postconf/postconf_unused.c up to 1.3 external/ibm-public/postfix/dist/src/postconf/postconf_user.c up to 1.6 external/ibm-public/postfix/dist/src/postconf/test18.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test2.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test28.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/postconf/test29.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/postconf/test57.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postconf/test59.ref up to 1.1.1.4 external/ibm-public/postfix/dist/src/postconf/test67.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/postconf/test76.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/postdrop/postdrop.c up to 1.6 external/ibm-public/postfix/dist/src/postfix/postfix.c up to 1.8 external/ibm-public/postfix/dist/src/postlog/postlog.c up to 1.7 external/ibm-public/postfix/dist/src/postmap/Makefile.in up to 1.1.1.9 external/ibm-public/postfix/dist/src/postmap/postmap.c up to 1.7 external/ibm-public/postfix/dist/src/postmulti/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/postmulti/postmulti.c up to 1.5 external/ibm-public/postfix/dist/src/postqueue/postqueue.c up to 1.6 external/ibm-public/postfix/dist/src/postqueue/showq_compat.c up to 1.5 external/ibm-public/postfix/dist/src/postqueue/showq_json.c up to 1.6 external/ibm-public/postfix/dist/src/postscreen/postscreen.c up to 1.7 external/ibm-public/postfix/dist/src/postscreen/postscreen_endpt.c up to 1.6 external/ibm-public/postfix/dist/src/posttls-finger/posttls-finger.c up to 1.7 external/ibm-public/postfix/dist/src/proxymap/Makefile.in up to 1.1.1.8 external/ibm-public/postfix/dist/src/proxymap/proxymap.c up to 1.6 external/ibm-public/postfix/dist/src/qmgr/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/qmgr/qmgr.c up to 1.5 external/ibm-public/postfix/dist/src/qmgr/qmgr_bounce.c up to 1.2 external/ibm-public/postfix/dist/src/qmgr/qmgr_defer.c up to 1.2 external/ibm-public/postfix/dist/src/qmgr/qmgr_message.c up to 1.6 external/ibm-public/postfix/dist/src/sendmail/Makefile.in up to 1.1.1.6 external/ibm-public/postfix/dist/src/sendmail/sendmail.c up to 1.6 external/ibm-public/postfix/dist/src/showq/showq.c up to 1.6 external/ibm-public/postfix/dist/src/smtp/Makefile.in up to 1.1.1.12 external/ibm-public/postfix/dist/src/smtp/lmtp_params.c up to 1.7 external/ibm-public/postfix/dist/src/smtp/smtp.c up to 1.15 external/ibm-public/postfix/dist/src/smtp/smtp.h up to 1.7 external/ibm-public/postfix/dist/src/smtp/smtp_connect.c up to 1.7 external/ibm-public/postfix/dist/src/smtp/smtp_key.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_params.c up to 1.7 external/ibm-public/postfix/dist/src/smtp/smtp_proto.c up to 1.7 external/ibm-public/postfix/dist/src/smtp/smtp_rcpt.c up to 1.4 external/ibm-public/postfix/dist/src/smtp/smtp_state.c up to 1.5 external/ibm-public/postfix/dist/src/smtp/smtp_tls_policy.c up to 1.6 external/ibm-public/postfix/dist/src/smtp/smtp_tlsrpt.c up to 1.3 external/ibm-public/postfix/dist/src/smtp/smtp_trouble.c up to 1.4 external/ibm-public/postfix/dist/src/smtpd/Makefile.in up to 1.1.1.13 external/ibm-public/postfix/dist/src/smtpd/smtpd.c up to 1.22 external/ibm-public/postfix/dist/src/smtpd/smtpd.h up to 1.7 external/ibm-public/postfix/dist/src/smtpd/smtpd_chat.c up to 1.5 external/ibm-public/postfix/dist/src/smtpd/smtpd_check.c up to 1.8 external/ibm-public/postfix/dist/src/smtpd/smtpd_haproxy.c up to 1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_peer.c up to 1.6 external/ibm-public/postfix/dist/src/smtpd/smtpd_proxy.c up to 1.4 external/ibm-public/postfix/dist/src/smtpd/smtpd_proxy.h up to 1.2 external/ibm-public/postfix/dist/src/tls/Makefile.in up to 1.1.1.12 external/ibm-public/postfix/dist/src/tls/tls.h up to 1.7 external/ibm-public/postfix/dist/src/tls/tls_client.c up to 1.15 external/ibm-public/postfix/dist/src/tls/tls_dane.c up to 1.7 external/ibm-public/postfix/dist/src/tls/tls_dane.sh up to 1.1.1.2 external/ibm-public/postfix/dist/src/tls/tls_dh.c up to 1.7 external/ibm-public/postfix/dist/src/tls/tls_misc.c up to 1.7 external/ibm-public/postfix/dist/src/tls/tls_prng_file.c up to 1.3 external/ibm-public/postfix/dist/src/tls/tls_proxy.h up to 1.6 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_misc.c up to 1.5 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_print.c up to 1.6 external/ibm-public/postfix/dist/src/tls/tls_proxy_client_scan.c up to 1.6 external/ibm-public/postfix/dist/src/tls/tls_server.c up to 1.14 external/ibm-public/postfix/dist/src/tls/tls_verify.c up to 1.6 external/ibm-public/postfix/dist/src/tls/tlsrpt_wrapper.c up to 1.3 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy.c up to 1.8 external/ibm-public/postfix/dist/src/tlsproxy/tlsproxy_state.c up to 1.4 external/ibm-public/postfix/dist/src/trivial-rewrite/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/trivial-rewrite/resolve.c up to 1.6 external/ibm-public/postfix/dist/src/trivial-rewrite/trivial-rewrite.c up to 1.6 external/ibm-public/postfix/dist/src/util/Makefile.in up to 1.1.1.13 external/ibm-public/postfix/dist/src/util/alldig.c up to 1.4 external/ibm-public/postfix/dist/src/util/argv.c up to 1.6 external/ibm-public/postfix/dist/src/util/argv.h up to 1.6 external/ibm-public/postfix/dist/src/util/dict.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict.h up to 1.7 external/ibm-public/postfix/dist/src/util/dict_alloc.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_cache.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_cache.h up to 1.3 external/ibm-public/postfix/dist/src/util/dict_cdb.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_cidr.c up to 1.6 external/ibm-public/postfix/dist/src/util/dict_db.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_dbm.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_debug.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_env.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_fail.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_inline.c up to 1.6 external/ibm-public/postfix/dist/src/util/dict_lmdb.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_ni.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_nis.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_nisplus.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_open.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_pcre.c up to 1.6 external/ibm-public/postfix/dist/src/util/dict_pipe.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_random.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_regexp.c up to 1.6 external/ibm-public/postfix/dist/src/util/dict_sdbm.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_seq.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/dict_sockmap.c up to 1.7 external/ibm-public/postfix/dist/src/util/dict_static.c up to 1.5 external/ibm-public/postfix/dist/src/util/dict_surrogate.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_tcp.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_test.c up to 1.3 external/ibm-public/postfix/dist/src/util/dict_thash.c up to 1.6 external/ibm-public/postfix/dist/src/util/dict_union.c up to 1.4 external/ibm-public/postfix/dist/src/util/dict_unix.c up to 1.2 external/ibm-public/postfix/dist/src/util/dict_utf8_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/hash_fnv.c up to 1.5 external/ibm-public/postfix/dist/src/util/hex_code.c up to 1.5 external/ibm-public/postfix/dist/src/util/hex_code.h up to 1.6 external/ibm-public/postfix/dist/src/util/htable.c up to 1.5 external/ibm-public/postfix/dist/src/util/inet_addr_list.c up to 1.3 external/ibm-public/postfix/dist/src/util/inet_prefix_top.c up to 1.4 external/ibm-public/postfix/dist/src/util/inet_proto.c up to 1.5 external/ibm-public/postfix/dist/src/util/mac_expand.c up to 1.5 external/ibm-public/postfix/dist/src/util/mac_expand.h up to 1.6 external/ibm-public/postfix/dist/src/util/mac_expand.in up to 1.1.1.5 external/ibm-public/postfix/dist/src/util/mac_expand.ref up to 1.1.1.5 external/ibm-public/postfix/dist/src/util/match_list.c up to 1.4 external/ibm-public/postfix/dist/src/util/midna_domain.c up to 1.6 external/ibm-public/postfix/dist/src/util/mkmap_open.c up to 1.3 external/ibm-public/postfix/dist/src/util/msg_vstream.c up to 1.2 external/ibm-public/postfix/dist/src/util/myaddrinfo.c up to 1.4 external/ibm-public/postfix/dist/src/util/myaddrinfo.h up to 1.5 external/ibm-public/postfix/dist/src/util/myaddrinfo.ref up to 1.1.1.6 external/ibm-public/postfix/dist/src/util/myaddrinfo.ref2 up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/myaddrinfo4.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/myaddrinfo4.ref2 up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/myflock.c up to 1.4 external/ibm-public/postfix/dist/src/util/name_mask.c up to 1.5 external/ibm-public/postfix/dist/src/util/name_mask.h up to 1.2 external/ibm-public/postfix/dist/src/util/name_mask.ref5 up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/name_mask.ref6 up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/netstring.c up to 1.5 external/ibm-public/postfix/dist/src/util/normalize_ws.c up to 1.3 external/ibm-public/postfix/dist/src/util/open_as.c up to 1.2 external/ibm-public/postfix/dist/src/util/open_as.h up to 1.2 external/ibm-public/postfix/dist/src/util/quote_for_json.c up to 1.3 external/ibm-public/postfix/dist/src/util/sane_sockaddr_to_hostaddr.c up to 1.3 external/ibm-public/postfix/dist/src/util/spawn_command.c up to 1.4 external/ibm-public/postfix/dist/src/util/spawn_command.h up to 1.3 external/ibm-public/postfix/dist/src/util/stringops.h up to 1.7 external/ibm-public/postfix/dist/src/util/sys_defs.h up to 1.16 external/ibm-public/postfix/dist/src/util/unescape.ref up to 1.1.1.3 external/ibm-public/postfix/dist/src/util/vbuf_print.c up to 1.6 external/ibm-public/postfix/dist/src/util/vbuf_print_test.in up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/vbuf_print_test.ref up to 1.1.1.2 external/ibm-public/postfix/dist/src/util/vstream.c up to 1.6 external/ibm-public/postfix/dist/src/util/vstream.h up to 1.5 external/ibm-public/postfix/dist/src/util/vstring.c up to 1.5 external/ibm-public/postfix/dist/src/util/vstring_vstream.c up to 1.3 external/ibm-public/postfix/dist/src/verify/verify.c up to 1.6 external/ibm-public/postfix/dist/src/virtual/Makefile.in up to 1.1.1.7 external/ibm-public/postfix/dist/src/virtual/virtual.c up to 1.5 external/ibm-public/postfix/dist/src/virtual/virtual.h up to 1.2 external/ibm-public/postfix/dist/src/xsasl/xsasl_dovecot_server.c up to 1.6 external/ibm-public/postfix/lib/global/Makefile up to 1.12 external/ibm-public/postfix/lib/util/Makefile up to 1.13 external/ibm-public/postfix/libexec/smtp/Makefile up to 1.5 doc/3RDPARTY (manually edited) Import Postfix 3.11.2. @ text @d225 1 a225 1 postscreen_greet_wait (normal: 6s, overload: 2s) d362 1 a362 1 postscreen_command_time_limit (normal: 300s, overload: 10s) d408 1 a408 1 ging delay values. a470 3 Wietse Venema porcupine.org @ 1.1.1.10 log @Import postfix 3.11.2 (previous was 3.10.1) Changes in 3.11.2 Bugfix (defect introduced: Postfix 3.11): the proxymap(8) daemon dereferenced an uninitialized pointer after a request protocol error. This daemon is not exposed to local or remote users. Found by Claude Opus 4.6. Bugfix (defect introduced: 20260309) a change, to set the service_name default value to "amnesiac", violated a test that parameter names in postconf output must match 1:1 with parameter names in the postlink script. Changes in 3.11.1 Bugfix (defect introduced: 20260219): alias_maps errors when default_database_type was not set in main.cf. Fix by Michael Tokarev. Bugfix (defect introduced: Postfix 3.0): buffer over-read when Postfix is configured with an enhanced status code not followed by other text. For example, "5.7.2" without text after the three-number code, in an access(5) table, header or body checks, or with "$rbl_code $rbl_text" in rbl_reply_maps or default_rbl_reply. These are all uncommon configurations. Problem reported by Kamil Frankowicz. Bugfix (defect introduced: Postfix 3.3): null pointer in nbdb_reindexd(8) because the "service_name" value was not propagated. Report by Michael Tokarev. During Postfix start-up, avoid a spurious error message from nbdb_reindexd(8), when non_bdb_migration_level disables automatic re-indexing. Changes in 3.11.0 Postfix stable release 3.11.0 is available. Postfix 3.7 - 3.10 were updated a few weeks ago; after that, Postfix 3.7 will no longer be updated. The main changes are below. See the RELEASE_NOTES file for further details. Berkeley DB migration: Some (Linux) distributions are removing support for BerkeleyDB databases (In Postfix, this means we lose support for the hash: and btree: lookup tables). See NON_BERKELEYDB_README for manual and partially automatic migration from btree: to lmdb:, and from hash: to lmdb: or cdb:. The loss of BerkeleyDB affects Mailman versions that want to execute commands like "postmap hash:/path/to/file" when a mailing list is added or removed. Postfix provides a way to redirect such commands to a supported database type. You don't have to wait until BerkeleyDB support is removed. It can make sense to migrate while BerkeleyDB support is still available (mainly, less downtime). Changes in TLS support: Default TLS security. The Postfix SMTP client smtp_tls_security_level default value is "may" if Postfix was built with TLS support, and the compatibility_level is 3.11 or higher. Support for the RFC 8689 "REQUIRETLS" verb in ESMTP. This requires that every SMTP (and LMTP) server in the forward path is strongly authenticated with DANE, STS, or equivalent, and that every server announces REQUIRETLS support. See REQUIRETLS_README for suggestions to carefully enforce REQUIRETLS without causing massive mail delivery problems. Logging the TLS security level. This shows the desired and actual TLS security level enforcement status and, if a message requests REQUIRETLS, the REQUIRETLS policy enforcement status. For a list of examples see smtp_log_tls_feature_status Workaround for an interface mismatch between the Postfix SMTP client and MTA-STS policy plugins. This introduces a new parameter smtp_tls_enforce_sts_mx_patterns (default: "yes"). The MTA-STS plugin configuration needs to enable TLSRPT support, so that it forwards STS policy attributes to Postfix. Both postfix-tlspol and postfix-mta-sts-resolver have been updated accordingly. With this, the Postfix SMTP client will connect to an MX host only if its name matches any STS policy MX host pattern, and will match a server certificate against the MX hostname. Otherwise, the old behavior stays in effect: connect to any MX host listed in DNS, and match a server certificate against any STS policy MX host pattern. Post-quantum cryptography support. With OpenSSL 3.5 and later, change the tls_eecdh_auto_curves default value to avoid problems with network infrastructure that mishandles TLS hello messages larger than one (Ethernet) TCP segment. This problem is more generally known as "protocol ossification". Miscellaneous changes: Deprecation of obsolete parameters. Postfix programs log a warning that these parameters will be removed. See DEPRECATION_README for a list of deprecated parameters. JSON output support with "postconf -j|-jM|-jF|-jP", "postalias -jq|-js", "postmap -jq|-js", and "postmulti -jl". No support is planned for JSON input support. Milter support: improved Milter error handling for messages that arrive over a long-lived SMTP connection, by changing the default milter_default_action from "tempfail" to the new "shutdown" action (i.e. disconnect the remote SMTP client). This was already back-ported to earlier stable releases. For more changes in the 3.10 branch see: https://www.postfix.org/announcements.html @ text @d225 1 a225 1 postscreen_greet_wait (normal: 6s, overload: 2s) d362 1 a362 1 postscreen_command_time_limit (normal: 300s, overload: 10s) d408 1 a408 1 ging delay values. a470 3 Wietse Venema porcupine.org @ 1.1.1.1.2.1 log @file postscreen.8.html was added on branch bouyer-quota2 on 2011-03-05 15:08:55 +0000 @ text @d1 421 @ 1.1.1.1.2.2 log @Sync with HEAD @ text @a0 421 Postfix manual - postscreen(8) 
POSTSCREEN(8)                                                    POSTSCREEN(8)

NAME
       postscreen - Postfix zombie blocker

SYNOPSIS
       postscreen [generic Postfix daemon options]

DESCRIPTION
       The Postfix postscreen(8) server performs triage on multi-
       ple inbound SMTP connections at the  same  time.  While  a
       single  postscreen(8)  process  keeps  spambots  away from
       Postfix SMTP server processes, more  Postfix  SMTP  server
       processes remain available for legitimate clients.

       This program should not be used on SMTP ports that receive
       mail from end-user clients (MUAs). In  a  typical  deploy-
       ment,  postscreen(8)  is  used  on  the "port 25" service,
       while MUA clients submit mail via the submission  service.

       postscreen(8)  maintains a temporary whitelist for clients
       that have passed a number of tests.  When an  SMTP  client
       IP  address  is  whitelisted,  postscreen(8) hands off the
       connection immediately to a Postfix SMTP  server  process.
       This minimizes the overhead for legitimate mail.

       By  default,  postscreen(8)  logs statistics and hands off
       every connection to a Postfix SMTP server  process,  while
       excluding clients in mynetworks from all tests (primarily,
       to avoid problems with non-standard  SMTP  implementations
       in  network  appliances).   This  mode  is useful for non-
       destructive testing.

       In a typical production setting, postscreen(8) is  config-
       ured  to  reject  mail  from clients that fail one or more
       tests. postscreen(8) logs rejected mail  with  the  client
       address, helo, sender and recipient information.

       postscreen(8)  is  not an SMTP proxy; this is intentional.
       The purpose is to keep spambots  away  from  Postfix  SMTP
       server processes, while minimizing overhead for legitimate
       traffic.

SECURITY
       The postscreen(8) server is moderately security-sensitive.
       It  talks to untrusted clients on the network. The process
       can be run chrooted at fixed low privilege.

STANDARDS
       RFC 821 (SMTP protocol)
       RFC 1123 (Host requirements)
       RFC 1652 (8bit-MIME transport)
       RFC 1869 (SMTP service extensions)
       RFC 1870 (Message Size Declaration)
       RFC 1985 (ETRN command)
       RFC 2034 (SMTP Enhanced Status Codes)
       RFC 2821 (SMTP protocol)
       Not: RFC 2920 (SMTP Pipelining)
       RFC 3207 (STARTTLS command)
       RFC 3461 (SMTP DSN Extension)
       RFC 3463 (Enhanced Status Codes)
       RFC 5321 (SMTP protocol, including multi-line 220 banners)

DIAGNOSTICS
       Problems and transactions are logged to syslogd(8).

BUGS
       The postscreen(8) built-in SMTP protocol engine  currently
       does  not  announce support for AUTH, XCLIENT or XFORWARD.
       Support for AUTH may be added in the future.  In the  mean
       time, if you need to make these services available on port
       25, then do not enable  the  optional  "after  220  server
       greeting" tests, and do not use DNSBLs that reject traffic
       from dial-up and residential networks.

       The optional "after 220  server  greeting"  tests  involve
       postscreen(8)'s  built-in SMTP protocol engine. When these
       tests succeed, postscreen(8) adds the client to the tempo-
       rary  whitelist but it cannot not hand off the "live" con-
       nection to a Postfix SMTP server process in the middle  of
       a  session.   Instead,  postscreen(8)  defers  attempts to
       deliver mail with a 4XX status, and waits for  the  client
       to  disconnect.   The next time a good client connects, it
       will be allowed to talk to a Postfix SMTP  server  process
       to  deliver  mail.  postscreen(8)  mitigates the impact of
       this limitation by giving such  tests  a  long  expiration
       time.

CONFIGURATION PARAMETERS
       Changes  to  main.cf  are  not picked up automatically, as
       postscreen(8) processes may run for  several  hours.   Use
       the command "postfix reload" after a configuration change.

       The text below provides  only  a  parameter  summary.  See
       postconf(5) for more details including examples.

       NOTE:  Some  postscreen(8)  parameters  implement  stress-
       dependent behavior.   This  is  supported  only  when  the
       default  parameter  value is stress-dependent (that is, it
       looks like ${stress?X}${stress:Y}, or it is the  $name  of
       an  smtpd  parameter  with  a  stress-dependent  default).
       Other parameters always evaluate as if the stress  parame-
       ter value is the empty string.

COMPATIBILITY CONTROLS
       postscreen_command_filter ($smtpd_command_filter)
              A  mechanism to transform commands from remote SMTP
              clients.

       postscreen_discard_ehlo_keyword_address_maps  ($smtpd_dis-
       card_ehlo_keyword_address_maps)
              Lookup tables, indexed by the  remote  SMTP  client
              address,  with  case insensitive lists of EHLO key-
              words (pipelining, starttls, auth, etc.)  that  the
              postscreen(8)  server  will  not  send  in the EHLO
              response to a remote SMTP client.

       postscreen_discard_ehlo_keywords ($smtpd_discard_ehlo_key-
       words)
              A case insensitive list of EHLO keywords  (pipelin-
              ing,  starttls,  auth, etc.) that the postscreen(8)
              server will not send in  the  EHLO  response  to  a
              remote SMTP client.

TROUBLE SHOOTING CONTROLS
       postscreen_expansion_filter (see 'postconf -d' output)
              List   of   characters   that   are   permitted  in
              postscreen_reject_footer attribute expansions.

       postscreen_reject_footer ($smtpd_reject_footer)
              Optional information that is appended after  a  4XX
              or 5XX server response.

       soft_bounce (no)
              Safety net to keep mail queued that would otherwise
              be returned to the sender.

PERMANENT WHITE/BLACKLIST TEST
       This test is executed  immediately  after  a  remote  SMTP
       client  connects.  If a client is permanently whitelisted,
       the client will be handed off  immediately  to  a  Postfix
       SMTP server process.

       postscreen_access_list (permit_mynetworks)
              Permanent white/blacklist for remote SMTP client IP
              addresses.

       postscreen_blacklist_action (ignore)
              The action that postscreen(8) takes  when  an  SMTP
              client   is   permanently   blacklisted   with  the
              postscreen_access_list parameter.

BEFORE-GREETING TESTS
       These tests are executed before  the  remote  SMTP  client
       receives the "220 servername" greeting. If no tests remain
       after the successful completion of this phase, the  client
       will  be  handed  off immediately to a Postfix SMTP server
       process.

       dnsblog_service_name (dnsblog)
              The name of the dnsblog(8) service  entry  in  mas-
              ter.cf.

       postscreen_dnsbl_action (ignore)
              The  action  that  postscreen(8) takes when an SMTP
              client's  combined  DNSBL  score  is  equal  to  or
              greater  than  a  threshold  (as  defined  with the
              postscreen_dnsbl_sites and postscreen_dnsbl_thresh-
              old parameters).

       postscreen_dnsbl_reply_map (empty)
              A  mapping  from  actual  DNSBL  domain  name which
              includes a secret password,  to  the  DNSBL  domain
              name  that  postscreen  will  reply  with  when  it
              rejects mail.

       postscreen_dnsbl_sites (empty)
              Optional list of DNS white/blacklist domains,  fil-
              ters and weight factors.

       postscreen_dnsbl_threshold (1)
              The  inclusive  lower  bound  for  blocking an SMTP
              client,  based  on  its  combined  DNSBL  score  as
              defined  with the postscreen_dnsbl_sites parameter.

       postscreen_greet_action (ignore)
              The action that postscreen(8) takes  when  an  SMTP
              client speaks before its turn within the time spec-
              ified with the postscreen_greet_wait parameter.

       postscreen_greet_banner ($smtpd_banner)
              The  text  in  the  optional  "220-text..."  server
              response that postscreen(8) sends ahead of the real
              Postfix SMTP server's "220 text..." response, in an
              attempt  to  confuse  bad SMTP clients so that they
              speak before their turn (pre-greet).

       postscreen_greet_wait (${stress?2}${stress:6}s)
              The amount of time that postscreen(8) will wait for
              an  SMTP  client to send a command before its turn,
              and for DNS  blocklist  lookup  results  to  arrive
              (default:  up  to  2  seconds under stress, up to 6
              seconds otherwise).

       smtpd_service_name (smtpd)
              The internal service  that  postscreen(8)  forwards
              allowed connections to.

AFTER-GREETING TESTS
       These  tests  are  executed  after  the remote SMTP client
       receives the "220 servername" greeting. If a client passes
       all  tests  during  this  phase,  it  will  receive  a 4XX
       response to RCPT TO commands until the  client  hangs  up.
       After this, the client will be allowed to talk directly to
       a Postfix SMTP server process.

       postscreen_bare_newline_action (ignore)
              The action that postscreen(8) takes  when  an  SMTP
              client  sends  a bare newline character, that is, a
              newline not preceded by carriage return.

       postscreen_bare_newline_enable (no)
              Enable "bare newline" SMTP protocol  tests  in  the
              postscreen(8) server.

       postscreen_disable_vrfy_command ($disable_vrfy_command)
              Disable  the SMTP VRFY command in the postscreen(8)
              daemon.

       postscreen_forbidden_commands ($smtpd_forbidden_commands)
              List of commands that the postscreen(8) server con-
              siders in violation of the SMTP protocol.

       postscreen_helo_required ($smtpd_helo_required)
              Require  that  a  remote  SMTP client sends HELO or
              EHLO before commencing a MAIL transaction.

       postscreen_non_smtp_command_action (drop)
              The action that postscreen(8) takes  when  an  SMTP
              client  sends  non-SMTP  commands as specified with
              the postscreen_forbidden_commands parameter.

       postscreen_non_smtp_command_enable (no)
              Enable   "non-SMTP   command"    tests    in    the
              postscreen(8) server.

       postscreen_pipelining_action (enforce)
              The  action  that  postscreen(8) takes when an SMTP
              client sends multiple commands instead  of  sending
              one  command and waiting for the server to respond.

       postscreen_pipelining_enable (no)
              Enable "pipelining"  SMTP  protocol  tests  in  the
              postscreen(8) server.

CACHE CONTROLS
       postscreen_cache_cleanup_interval (12h)
              The  amount  of  time  between  postscreen(8) cache
              cleanup runs.

       postscreen_cache_map                   (btree:$data_direc-
       tory/postscreen_cache)
              Persistent storage  for  the  postscreen(8)  server
              decisions.

       postscreen_cache_retention_time (7d)
              The amount of time that postscreen(8) will cache an
              expired temporary  whitelist  entry  before  it  is
              removed.

       postscreen_bare_newline_ttl (30d)
              The  amount of time that postscreen(8) will use the
              result from a successful "bare newline" SMTP proto-
              col test.

       postscreen_dnsbl_ttl (1h)
              The  amount of time that postscreen(8) will use the
              result from a successful DNS blocklist test.

       postscreen_greet_ttl (1d)
              The amount of time that postscreen(8) will use  the
              result from a successful PREGREET test.

       postscreen_non_smtp_command_ttl (30d)
              The  amount of time that postscreen(8) will use the
              result from a  successful  "non_smtp_command"  SMTP
              protocol test.

       postscreen_pipelining_ttl (30d)
              The  amount of time that postscreen(8) will use the
              result from a successful "pipelining" SMTP protocol
              test.

RESOURCE CONTROLS
       line_length_limit (2048)
              Upon  input,  long lines are chopped up into pieces
              of at most this length; upon delivery,  long  lines
              are reconstructed.

       postscreen_client_connection_count_limit
       ($smtpd_client_connection_count_limit)
              How  many  simultaneous  connections  any client is
              allowed to have with the postscreen(8) daemon.

       postscreen_command_count_limit (20)
              The limit on the total number of commands per  SMTP
              session  for postscreen(8)'s built-in SMTP protocol
              engine.

       postscreen_command_time_limit (${stress?10}${stress:300}s)
              The time limit to read an entire command line  with
              postscreen(8)'s built-in SMTP protocol engine.

       postscreen_post_queue_limit ($default_process_limit)
              The  number of clients that can be waiting for ser-
              vice from a real SMTP server process.

       postscreen_pre_queue_limit ($default_process_limit)
              The number of non-whitelisted clients that  can  be
              waiting  for  a  decision whether they will receive
              service from a real SMTP server process.

       postscreen_watchdog_timeout (10s)
              How much time a postscreen(8) process may  take  to
              respond  to  an SMTP client command or to perform a
              cache operation before it is terminated by a built-
              in watchdog timer.

STARTTLS CONTROLS
       postscreen_tls_security_level ($smtpd_tls_security_level)
              The  SMTP  TLS security level for the postscreen(8)
              server; when a non-empty value is  specified,  this
              overrides       the       obsolete       parameters
              postscreen_use_tls and postscreen_enforce_tls.

       tlsproxy_service_name (tlsproxy)
              The name of the tlsproxy(8) service entry  in  mas-
              ter.cf.

OBSOLETE STARTTLS SUPPORT CONTROLS
       These  parameters  are  supported  for  compatibility with
       smtpd(8) legacy parameters.

       postscreen_use_tls ($smtpd_use_tls)
              Opportunistic TLS:  announce  STARTTLS  support  to
              SMTP  clients,  but do not require that clients use
              TLS encryption.

       postscreen_enforce_tls ($smtpd_enforce_tls)
              Mandatory TLS: announce STARTTLS  support  to  SMTP
              clients,  and  require that clients use TLS encryp-
              tion.

MISCELLANEOUS CONTROLS
       config_directory (see 'postconf -d' output)
              The default location of  the  Postfix  main.cf  and
              master.cf configuration files.

       delay_logging_resolution_limit (2)
              The  maximal  number  of  digits  after the decimal
              point when logging sub-second delay values.

       command_directory (see 'postconf -d' output)
              The location of  all  postfix  administrative  com-
              mands.

       max_idle (100s)
              The  maximum  amount  of  time that an idle Postfix
              daemon process waits  for  an  incoming  connection
              before terminating voluntarily.

       process_id (read-only)
              The  process  ID  of  a  Postfix  command or daemon
              process.

       process_name (read-only)
              The process name of a  Postfix  command  or  daemon
              process.

       syslog_facility (mail)
              The syslog facility of Postfix logging.

       syslog_name (see 'postconf -d' output)
              The  mail  system  name  that  is  prepended to the
              process name in syslog  records,  so  that  "smtpd"
              becomes, for example, "postfix/smtpd".

SEE ALSO
       smtpd(8), Postfix SMTP server
       tlsproxy(8), Postfix TLS proxy server
       dnsblog(8), DNS black/whitelist logger
       syslogd(8), system logging

README FILES
       POSTSCREEN_README, Postfix Postscreen Howto

LICENSE
       The Secure Mailer license must be  distributed  with  this
       software.

HISTORY
       This service was introduced with Postfix version 2.8.

       Many  ideas in postscreen(8) were explored in earlier work
       by Michael Tokarev, in OpenBSD spamd, and in  MailChannels
       Traffic Control.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

                                                                 POSTSCREEN(8)
@