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showq(8) - showq - list the Postfix mail queue - man 8 showq

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SHOWQ(8)                                                              SHOWQ(8)



NAME
       showq - list the Postfix mail(1,8) queue(1,3)

SYNOPSIS
       showq [generic Postfix daemon options]

DESCRIPTION
       The  showq(8)  daemon reports the Postfix mail(1,8) queue(1,3) status.  It is the
       program that emulates the sendmail(1,8) `mailq' command.

       The showq(8) daemon can also be run in(1,8) stand-alone mode  by  the  supe-
       ruser.  This  mode  of operation is used to emulate the `mailq' command
       while the Postfix mail(1,8) system is down.

SECURITY
       The showq(8) daemon can run in(1,8) a chroot(1,2) jail at  fixed  low  privilege,
       and  takes  no input from the client. Its service port is accessible to
       local untrusted users(1,5), so the service can be susceptible to  denial  of
       service attacks.

STANDARDS
       None. The showq(8) daemon does not interact with the outside world.

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

BUGS
       The  showq(8)  daemon  runs  at a fixed low privilege; consequently, it
       cannot extract information from queue(1,3) files in(1,8) the maildrop  directory.

CONFIGURATION PARAMETERS
       Changes  to  main.cf  are picked up automatically as showq(8) processes
       run for only a limited amount of time. Use the command "postfix reload"
       to speed up a change.

       The  text  below provides only a parameter summary. See postconf(1,5)(5) for
       more details including examples.

       config_directory (see 'postconf(1,5) -d' output)
              The default location of the Postfix main.cf and  master.cf  con-
              figuration files.

       daemon_timeout (18000s)
              How  much  time(1,2,n)  a  Postfix  daemon process may take to handle a
              request before it is terminated by a built-in watchdog(5,8) timer.

       duplicate_filter_limit (1000)
              The maximal number of addresses remembered by the address dupli-
              cate filter(1,3x,3x curs_util) for aliases(5) or virtual(5,8)(5) alias expansion, or for
              showq(8) queue(1,3) displays.

       empty_address_recipient (MAILER-DAEMON)
              The recipient of mail(1,8) addressed to the null address.

       ipc_timeout (3600s)
              The time(1,2,n) limit for sending  or  receiving  information  over  an
              internal communication channel.

       max_idle (100s)
              The  maximum  amount of time(1,2,n) that an idle Postfix daemon process
              waits for the next service request before exiting.

       max_use (100)
              The maximal number of connection requests before a Postfix  dae-
              mon process terminates.

       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.

       queue_directory (see 'postconf(1,5) -d' output)
              The location of the Postfix top-level queue(1,3) directory.

       syslog_facility (mail(1,8))
              The syslog(2,3,5,3 Sys::Syslog) facility of Postfix logging.

       syslog_name (postfix)
              The  mail(1,8)  system  name that is prepended to the process name in(1,8)
              syslog(2,3,5,3 Sys::Syslog) records, so that "smtpd"  becomes,  for  example,  "post-
              fix/smtpd".

FILES
       /var/spool/postfix, queue(1,3) directories

SEE ALSO
       pickup(8), local mail(1,8) pickup service
       cleanup(8), canonicalize and enqueue mail(1,8)
       qmgr(8), queue(1,3) manager
       postconf(1,5)(5), configuration parameters
       master(5,8)(8), process manager
       syslogd(8), system logging

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



                                                                      SHOWQ(8)

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