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+<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html> <head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+<title> Postfix manual - showq(8) </title>
+</head> <body> <pre>
+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. The output
+ is meant to be formatted by the <a href="postqueue.1.html">postqueue(1)</a> command, as it emulates
+ the Sendmail `mailq' command.
+
+ The <a href="showq.8.html"><b>showq</b>(8)</a> 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.
+
+<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 service 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 outside world.
+
+<b>DIAGNOSTICS</b>
+ Problems and transactions are logged to <b>syslogd</b>(8) or <a href="postlogd.8.html"><b>postlogd</b>(8)</a>.
+
+<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> con-
+ figuration 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 dupli-
+ cate filter for <a href="aliases.5.html"><b>aliases</b>(5)</a> or <a href="virtual.5.html"><b>virtual</b>(5)</a> alias expansion, or for
+ <a href="showq.8.html"><b>showq</b>(8)</a> queue displays.
+
+ <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 terminating 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 directory.
+
+ <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>
+ A prefix that is prepended to the process name in syslog
+ records, so that, for example, "smtpd" becomes "prefix/smtpd".
+
+ Available in Postfix version 2.9 and later:
+
+ <b><a href="postconf.5.html#enable_long_queue_ids">enable_long_queue_ids</a> (no)</b>
+ Enable long, non-repeating, queue IDs (queue file names).
+
+ Available in Postfix 3.3 and later:
+
+ <b><a href="postconf.5.html#service_name">service_name</a> (read-only)</b>
+ The <a href="master.5.html">master.cf</a> service name of a Postfix daemon process.
+
+<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
+ <a href="postlogd.8.html">postlogd(8)</a>, Postfix logging
+ 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
+
+ Wietse Venema
+ Google, Inc.
+ 111 8th Avenue
+ New York, NY 10011, USA
+
+ SHOWQ(8)
+</pre> </body> </html>