showq - list the Postfix mail queue
showq [generic Postfix daemon options]
The showq(8) daemon reports the Postfix mail queue status.
It is the program that emulates the sendmail `mailq' com-
The showq(8) 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.
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 ser-
vice can be susceptible to denial of service attacks.
None. The showq(8) daemon does not interact with the out-
Problems and transactions are logged to syslogd(8).
The showq(8) daemon runs at a fixed low privilege; conse-
quently, it cannot extract information from queue files in
the maildrop directory.
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 configuration files.
How much time a Postfix daemon process may take to
handle a request before it is terminated by a
built-in watchdog timer.
The maximal number of addresses remembered by the
address duplicate filter for aliases(5) or vir-
tual(5) alias expansion, or for showq(8) queue dis-
The recipient of mail addressed to the null
The time limit for sending or receiving information
over an internal communication channel.
The maximum amount of time that an idle Postfix
daemon process waits for the next service request
The maximal number of connection requests before a
Postfix daemon process terminates.
The process ID of a Postfix command or daemon
The process name of a Postfix command or daemon
queue_directory (see 'postconf -d' output)
The location of the Postfix top-level queue direc-
The syslog facility of Postfix logging.
The mail system name that is prepended to the
process name in syslog records, so that "smtpd"
becomes, for example, "postfix/smtpd".
/var/spool/postfix, queue directories
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
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