POSTQUEUE(1) POSTQUEUE(1)
NAME
postqueue - Postfix queue control
SYNOPSIS
postqueue [-v] [-c config_dir] -f
postqueue [-v] [-c config_dir] -i queue_id
postqueue [-v] [-c config_dir] -p
postqueue [-v] [-c config_dir] -s site
DESCRIPTION
The postqueue(1) command implements the Postfix user
interface for queue management. It implements operations
that are traditionally available via the sendmail(1) com-
mand. See the postsuper(1) command for queue operations
that require super-user privileges such as deleting a mes-
sage from the queue or changing the status of a message.
The following options are recognized:
-c config_dir
The main.cf configuration file is in the named
directory instead of the default configuration
directory. See also the MAIL_CONFIG environment
setting below.
-f Flush the queue: attempt to deliver all queued
mail.
This option implements the traditional "sendmail
-q" command, by contacting the Postfix qmgr(8) dae-
mon.
Warning: flushing undeliverable mail frequently
will result in poor delivery performance of all
other mail.
-i queue_id
Schedule immediate delivery of deferred mail with
the specified queue ID.
This option implements the traditional sendmail -qI
command, by contacting the flush(8) server.
This feature is available with Postfix version 2.4
and later.
-p Produce a traditional sendmail-style queue listing.
This option implements the traditional mailq com-
mand, by contacting the Postfix showq(8) daemon.
Each queue entry shows the queue file ID, message
size, arrival time, sender, and the recipients that
still need to be delivered. If mail could not be
delivered upon the last attempt, the reason for
failure is shown. This mode of operation is imple-
mented by executing the postqueue(1) command. The
queue ID string is followed by an optional status
character:
* The message is in the active queue, i.e. the
message is selected for delivery.
! The message is in the hold queue, i.e. no
further delivery attempt will be made until
the mail is taken off hold.
-s site
Schedule immediate delivery of all mail that is
queued for the named site. A numerical site must be
specified as a valid RFC 2821 address literal
enclosed in [], just like in email addresses. The
site must be eligible for the "fast flush" service.
See flush(8) for more information about the "fast
flush" service.
This option implements the traditional "sendmail
-qRsite" command, by contacting the Postfix
flush(8) daemon.
-v Enable verbose logging for debugging purposes. Mul-
tiple -v options make the software increasingly
verbose. As of Postfix 2.3, this option is avail-
able for the super-user only.
SECURITY
This program is designed to run with set-group ID privi-
leges, so that it can connect to Postfix daemon processes.
DIAGNOSTICS
Problems are logged to syslogd(8) and to the standard
error stream.
ENVIRONMENT
MAIL_CONFIG
Directory with the main.cf file. In order to avoid
exploitation of set-group ID privileges, a non-
standard directory is allowed only if:
o The name is listed in the standard main.cf
file with the alternate_config_directories
configuration parameter.
o The command is invoked by the super-user.
CONFIGURATION PARAMETERS
The following main.cf parameters are especially relevant
to this program. The text below provides only a parameter
summary. See postconf(5) for more details including exam-
ples.
alternate_config_directories (empty)
A list of non-default Postfix configuration direc-
tories that may be specified with "-c config_direc-
tory" on the command line, or via the MAIL_CONFIG
environment parameter.
config_directory (see 'postconf -d' output)
The default location of the Postfix main.cf and
master.cf configuration files.
command_directory (see 'postconf -d' output)
The location of all postfix administrative com-
mands.
fast_flush_domains ($relay_domains)
Optional list of destinations that are eligible for
per-destination logfiles with mail that is queued
to those destinations.
import_environment (see 'postconf -d' output)
The list of environment parameters that a Postfix
process will import from a non-Postfix parent
process.
queue_directory (see 'postconf -d' output)
The location of the Postfix top-level queue direc-
tory.
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, "postfix/smtpd".
trigger_timeout (10s)
The time limit for sending a trigger to a Postfix
daemon (for example, the pickup(8) or qmgr(8) dae-
mon).
Available in Postfix version 2.2 and later:
authorized_flush_users (static:anyone)
List of users who are authorized to flush the
queue.
authorized_mailq_users (static:anyone)
List of users who are authorized to view the queue.
FILES
/var/spool/postfix, mail queue
SEE ALSO
qmgr(8), queue manager
showq(8), list mail queue
flush(8), fast flush service
sendmail(1), Sendmail-compatible user interface
postsuper(1), privileged queue operations
README FILES
ETRN_README, Postfix ETRN howto
LICENSE
The Secure Mailer license must be distributed with this
software.
HISTORY
The postqueue command was introduced with Postfix version
1.1.
AUTHOR(S)
Wietse Venema
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
POSTQUEUE(1)