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SHOWQ(8)                                                              SHOWQ(8)

<b>NAME</b>
       showq - list the Postfix mail queue

<b>SYNOPSIS</b>
       <b>showq</b> [generic Postfix daemon options]

<b>DESCRIPTION</b>
       The <a href="showq.8.html"><b>showq</b>(8)</a> daemon reports the Postfix mail queue status.
       It is the program that emulates the sendmail `mailq'  com-
       mand.

       The <a href="showq.8.html"><b>showq</b>(8)</a> daemon can also be run in stand-alone mode by
       the superuser. This mode of operation is used  to  emulate
       the `mailq' command while the Postfix mail system is down.

<b>SECURITY</b>
       The <a href="showq.8.html"><b>showq</b>(8)</a> 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  ser-
       vice can be susceptible to denial of service attacks.

<b>STANDARDS</b>
       None.  The <a href="showq.8.html"><b>showq</b>(8)</a> daemon does not interact with the out-
       side world.

<b>DIAGNOSTICS</b>
       Problems and transactions are logged to <b>syslogd</b>(8).

<b>CONFIGURATION PARAMETERS</b>
       Changes to <a href="postconf.5.html"><b>main.cf</b></a> are picked up automatically as <a href="showq.8.html"><b>showq</b>(8)</a>
       processes  run  for only a limited amount of time. Use the
       command "<b>postfix reload</b>" to speed up a change.

       The text below provides  only  a  parameter  summary.  See
       <a href="postconf.5.html"><b>postconf</b>(5)</a> for more details including examples.

       <b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b>
              The  default  location  of  the Postfix <a href="postconf.5.html">main.cf</a> and
              <a href="master.5.html">master.cf</a> configuration files.

       <b><a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)</b>
              How much time a Postfix daemon process may take  to
              handle  a  request  before  it  is  terminated by a
              built-in watchdog timer.

       <b><a href="postconf.5.html#duplicate_filter_limit">duplicate_filter_limit</a> (1000)</b>
              The maximal number of addresses remembered  by  the
              address  duplicate  filter  for  <a href="aliases.5.html"><b>aliases</b>(5)</a> or <a href="virtual.5.html"><b>vir-</b></a>
              <a href="virtual.5.html"><b>tual</b>(5)</a> alias expansion, or for <a href="showq.8.html"><b>showq</b>(8)</a> queue dis-
              plays.

       <b><a href="postconf.5.html#empty_address_recipient">empty_address_recipient</a> (MAILER-DAEMON)</b>
              The   recipient  of  mail  addressed  to  the  null
              address.

       <b><a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)</b>
              The time limit for sending or receiving information
              over an internal communication channel.

       <b><a href="postconf.5.html#max_idle">max_idle</a> (100s)</b>
              The  maximum  amount  of  time that an idle Postfix
              daemon process waits  for  an  incoming  connection
              before terminating voluntarily.

       <b><a href="postconf.5.html#max_use">max_use</a> (100)</b>
              The  maximal  number of incoming connections that a
              Postfix daemon process will service  before  termi-
              nating voluntarily.

       <b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b>
              The  process  ID  of  a  Postfix  command or daemon
              process.

       <b><a href="postconf.5.html#process_name">process_name</a> (read-only)</b>
              The process name of a  Postfix  command  or  daemon
              process.

       <b><a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)</b>
              The  location of the Postfix top-level queue direc-
              tory.

       <b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b>
              The syslog facility of Postfix logging.

       <b><a href="postconf.5.html#syslog_name">syslog_name</a> (see 'postconf -d' output)</b>
              The mail system  name  that  is  prepended  to  the
              process  name  in  syslog  records, so that "smtpd"
              becomes, for example, "postfix/smtpd".

<b>FILES</b>
       /var/spool/postfix, queue directories

<b>SEE ALSO</b>
       <a href="pickup.8.html">pickup(8)</a>, local mail pickup service
       <a href="cleanup.8.html">cleanup(8)</a>, canonicalize and enqueue mail
       <a href="qmgr.8.html">qmgr(8)</a>, queue manager
       <a href="postconf.5.html">postconf(5)</a>, configuration parameters
       <a href="master.8.html">master(8)</a>, process manager
       syslogd(8), system logging

<b>LICENSE</b>
       The Secure Mailer license must be  distributed  with  this
       software.

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

                                                                      SHOWQ(8)
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