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    Command:

    postfix

    
    
    

    SYNOPSIS

           postfix [-Dv] [-c config_dir] command
    
    
    

    DESCRIPTION

           This  command  is  reserved  for the superuser. To submit mail, use the
           Postfix sendmail(1) command.
    
           The postfix(1) command controls the operation of the Postfix mail  sys-
           tem:  start  or stop the master(8) daemon, do a health check, and other
           maintenance.
    
           By default, the postfix(1) command sets up a  standardized  environment
           and runs the postfix-script shell script to do the actual work.
    
           However,  when  support  for  multiple Postfix instances is configured,
           postfix(1) executes the command specified with the multi_instance_wrap-
           per configuration parameter.  This command will execute the command for
           each applicable Postfix instance.
    
           The following commands are implemented:
    
           check  Warn about bad directory/file ownership or permissions, and cre-
                  ate missing directories.
    
           start  Start  the Postfix mail system. This also runs the configuration
                  check described above.
    
           stop   Stop the Postfix mail system in an orderly fashion. If possible,
                  running  processes  are  allowed  to terminate at their earliest
                  convenience.
    
                  Note: in order to refresh the Postfix mail system after  a  con-
                  figuration  change,  do  not  use the start and stop commands in
                  succession. Use the reload command instead.
    
           abort  Stop the Postfix mail system  abruptly.  Running  processes  are
                  signaled to stop immediately.
    
           flush  Force delivery: attempt to deliver every message in the deferred
                  mail queue. Normally, attempts to deliver delayed mail happen at
                  regular  intervals,  the  interval  doubling  after  each failed
                  attempt.
    
                  Warning: flushing undeliverable mail frequently will  result  in
                  poor delivery performance of all other mail.
    
           reload Re-read  configuration  files.  Running  processes  terminate at
                  their earliest convenience.
    
           status Indicate if the Postfix mail system is currently running.
    
           set-permissions [name=value ...]
                  Postfix  needs  in order to run: add or update services, and add
                  or update configuration parameter settings.
    
                  Specify name=value to override and update specific main.cf  con-
                  figuration parameters.
    
                  This  feature is available in Postfix 2.1 and later.  With Post-
                  fix  2.0  and   earlier,   use   "$config_directory/post-install
                  upgrade-configuration".
    
           The following options are implemented:
    
           -c config_dir
                  Read  the main.cf and master.cf configuration files in the named
                  directory instead of the default configuration  directory.   Use
                  this  to  distinguish  between multiple Postfix instances on the
                  same host.
    
                  With Postfix 2.6 and later, this option  forces  the  postfix(1)
                  command to operate on the specified Postfix instance only.  This
                  behavior is inherited by  postfix(1)  commands  that  run  as  a
                  descendant of the current process.
    
           -D (with postfix start only)
                  Run each Postfix daemon under control of a debugger as specified
                  via the debugger_command configuration parameter.
    
           -v     Enable verbose  logging  for  debugging  purposes.  Multiple  -v
                  options make the software increasingly verbose.
    
    
    

    ENVIRONMENT

           The  postfix(1)  command  exports  the  following environment variables
           before executing the postfix-script file:
    
           MAIL_CONFIG
                  This is set when the -c command-line option is present.
    
                  With Postfix 2.6 and later, this environment variable forces the
                  postfix(1)  command to operate on the specified Postfix instance
                  only.  This behavior is inherited by  postfix(1)  commands  that
                  run as a descendant of the current process.
    
           MAIL_VERBOSE
                  This is set when the -v command-line option is present.
    
           MAIL_DEBUG
                  This is set when the -D command-line option is present.
    
    
    

    CONFIGURATION PARAMETERS

           The following main.cf configuration parameters are exported as environ-
           ment variables with the same names:
    
                  The UNIX system account that owns the  Postfix  queue  and  most
                  Postfix daemon processes.
    
           setgid_group (postdrop)
                  The  group  ownership  of set-gid Postfix commands and of group-
                  writable Postfix directories.
    
           sendmail_path (see 'postconf -d' output)
                  A Sendmail compatibility feature that specifies the location  of
                  the Postfix sendmail(1) command.
    
           newaliases_path (see 'postconf -d' output)
                  Sendmail  compatibility  feature  that specifies the location of
                  the newaliases(1) command.
    
           mailq_path (see 'postconf -d' output)
                  Sendmail compatibility feature that specifies where the  Postfix
                  mailq(1) command is installed.
    
           html_directory (see 'postconf -d' output)
                  The  location  of Postfix HTML files that describe how to build,
                  configure or operate a specific Postfix subsystem or feature.
    
           manpage_directory (see 'postconf -d' output)
                  Where the Postfix manual pages are installed.
    
           readme_directory (see 'postconf -d' output)
                  The location of Postfix README files that describe how to build,
                  configure or operate a specific Postfix subsystem or feature.
    
           Available in Postfix version 2.5 and later:
    
           data_directory (see 'postconf -d' output)
                  The  directory  with  Postfix-writable  data files (for example:
                  caches, pseudo-random numbers).
    
           Other configuration parameters:
    
           config_directory (see 'postconf -d' output)
                  The default location of the Postfix main.cf and  master.cf  con-
                  figuration files.
    
           import_environment (see 'postconf -d' output)
                  The  list  of environment parameters that a Postfix process will
                  import from a non-Postfix parent 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, "post-
                  parameter value is non-empty.
    
           multi_instance_group (empty)
                  The optional instance group name of this Postfix instance.
    
           multi_instance_name (empty)
                  The optional instance name of this Postfix instance.
    
           multi_instance_enable (no)
                  Allow this Postfix instance to be started, stopped, etc.,  by  a
                  multi-instance manager.
    
    
    

    FILES

           Prior  to Postfix version 2.6, all of the following files were in $con-
           fig_directory. Some files are now in $daemon_directory so that they can
           be shared among multiple instances that run the same Postfix version.
    
           Use  the command "postconf config_directory" or "postconf daemon_direc-
           tory" to expand the names into their actual values.
    
           $config_directory/main.cf, Postfix configuration parameters
           $config_directory/master.cf, Postfix daemon processes
           $daemon_directory/postfix-files, file/directory permissions
           $daemon_directory/postfix-script, administrative commands
           $daemon_directory/post-install, post-installation configuration
    
    
    

    SEE ALSO

           Commands:
           postalias(1), create/update/query alias database
           postcat(1), examine Postfix queue file
           postconf(1), Postfix configuration utility
           postfix(1), Postfix control program
           postkick(1), trigger Postfix daemon
           postlock(1), Postfix-compatible locking
           postlog(1), Postfix-compatible logging
           postmap(1), Postfix lookup table manager
           postmulti(1), Postfix multi-instance manager
           postqueue(1), Postfix mail queue control
           postsuper(1), Postfix housekeeping
           mailq(1), Sendmail compatibility interface
           newaliases(1), Sendmail compatibility interface
           sendmail(1), Sendmail compatibility interface
    
           Postfix configuration:
           bounce(5), Postfix bounce message templates
           master(5), Postfix master.cf file syntax
           postconf(5), Postfix main.cf file syntax
           postfix-wrapper(5), Postfix multi-instance API
    
           Table-driven mechanisms:
           access(5), Postfix SMTP access control table
           aliases(5), Postfix alias database
           regexp_table(5), Associate POSIX regexp pattern with value
           tcp_table(5), Postfix client-server table lookup
    
           Daemon processes:
           anvil(8), Postfix connection/rate limiting
           bounce(8), defer(8), trace(8), Delivery status reports
           cleanup(8), canonicalize and enqueue message
           discard(8), Postfix discard delivery agent
           error(8), Postfix error delivery agent
           flush(8), Postfix fast ETRN service
           local(8), Postfix local delivery agent
           master(8), Postfix master daemon
           oqmgr(8), old Postfix queue manager
           pickup(8), Postfix local mail pickup
           pipe(8), deliver mail to non-Postfix command
           proxymap(8), Postfix lookup table proxy server
           qmgr(8), Postfix queue manager
           qmqpd(8), Postfix QMQP server
           scache(8), Postfix connection cache manager
           showq(8), list Postfix mail queue
           smtp(8), lmtp(8), Postfix SMTP+LMTP client
           smtpd(8), Postfix SMTP server
           spawn(8), run non-Postfix server
           tlsmgr(8), Postfix TLS cache and randomness manager
           trivial-rewrite(8), Postfix address rewriting
           verify(8), Postfix address verification
           virtual(8), Postfix virtual delivery agent
    
           Other:
           syslogd(8), system logging
    
    
    

    README FILES

           Use "postconf readme_directory" or "postconf html_directory" to  locate
           this information.
           OVERVIEW, overview of Postfix commands and processes
           BASIC_CONFIGURATION_README, Postfix basic configuration
           ADDRESS_REWRITING_README, Postfix address rewriting
           SMTPD_ACCESS_README, SMTP relay/access control
           CONTENT_INSPECTION_README, Postfix content inspection
           QSHAPE_README, Postfix queue analysis
    
    
    

    LICENSE

           The Secure Mailer license must be distributed with this software.
    
    
    

    AUTHOR(S)

           Wietse Venema
           IBM T.J. Watson Research
           P.O. Box 704
           Yorktown Heights, NY 10598, USA
    
           TLS support by:
           Lutz Jaenicke
           USA.
    
           Amos Gouaux
           University of Texas at Dallas
           P.O. Box 830688, MC34
           Richardson, TX 75083, USA
    
           IPv6 support originally by:
           Mark Huizer, Eindhoven University, The Netherlands
           Jun-ichiro 'itojun' Hagino, KAME project, Japan
           The Linux PLD project
           Dean Strik, Eindhoven University, The Netherlands
    
                                                                        POSTFIX(1)
    
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