SHOWQ(8)		    System Manager's Manual		      SHOWQ(8)



NAME
       showq - list the Postfix mail queue

SYNOPSIS
       showq [generic Postfix daemon options]

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

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

SECURITY
       The showq(8) daemon can run in a chroot jail at	fixed  low  privilege,
       and  takes  no input from the client. Its service port is accessible to
       local untrusted users, 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).

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(5) for
       more details including examples.

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

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

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

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

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

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

       max_use (100)
	      The maximal number of incoming connections that a Postfix daemon
	      process will service 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.

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

       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-
	      fix/smtpd".

FILES
       /var/spool/postfix, queue directories

SEE ALSO
       pickup(8), local mail pickup service
       cleanup(8), canonicalize and enqueue mail
       qmgr(8), queue manager
       postconf(5), configuration parameters
       master(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)