POSTQUEUE(1)						      General Commands Manual						      POSTQUEUE(1)

NAME

       postqueue - Postfix queue control

SYNOPSIS

   To flush the mail queue:

       postqueue [-v] [-c config_dir] -f

       postqueue [-v] [-c config_dir] -i queue_id

       postqueue [-v] [-c config_dir] -s site

   To list the mail queue:

       postqueue [-v] [-c config_dir] -j

       postqueue [-v] [-c config_dir] -p

DESCRIPTION

       The postqueue(1) command implements the Postfix user interface for queue management. It implements operations that are traditionally avail-
       able via the sendmail(1) command.  See the postsuper(1) command for queue operations that require super-user privileges such as deleting  a
       message 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) daemon.

	      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.

       -j     Produce a queue listing in JSON format, based on output from the showq(8) daemon.  The result is a  stream  of  zero  or	more  JSON
	      objects,	one  per queue file.  Each object is followed by a newline character to support simple streaming parsers. See "JSON OBJECT
	      FORMAT" below for details.

	      This feature is available in Postfix 3.1 and later.

       -p     Produce a traditional sendmail-style queue listing.  This option implements the traditional mailq command, 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.  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 5321
	      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. Multiple -v options make the software increasingly verbose. As of Postfix 2.3, this
	      option is available for the super-user only.

JSON OBJECT FORMAT

       Each JSON object represents one queue file; it is emitted as a single text line followed by a newline character.

       Object members have string values unless indicated otherwise.  Programs should ignore object members that are not listed here; the list	of
       members is expected to grow over time.

       queue_name
	      The  name  of  the queue where the message was found.  Note that the contents of the mail queue may change while it is being listed;
	      some messages may appear more than once, and some messages may be missed.

       queue_id
	      The queue file name. The queue_id may be reused within a Postfix instance unless "enable_long_queue_ids = true" and  time  is  mono-
	      tonic.   Even  then, the queue_id is not expected to be unique between different Postfix instances.  Management tools that require a
	      unique name should combine the queue_id with the myhostname setting of the Postfix instance.

       arrival_time
	      The number of seconds since the start of the UNIX epoch.

       message_size
	      The number of bytes in the message header and body. This number does not include message envelope information. It  is  approximately
	      equal to the number of bytes that would be transmitted via SMTP including the <CR><LF> line endings.

       sender The envelope sender address.

       recipients
	      An array containing zero or more objects with members:

	      address
		     One recipient address.

	      delay_reason
		     If  present, the reason for delayed delivery.  Delayed recipients may have no delay reason, for example, while delivery is in
		     progress, or after the system was stopped before it could record the reason.

SECURITY

       This program is designed to run with set-group ID privileges, so that it can connect to Postfix daemon processes.

STANDARDS

       RFC 7159 (JSON notation)

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 post-
       conf(5) for more details including examples.

       alternate_config_directories (empty)
	      A list of non-default Postfix configuration directories that may be specified with "-c config_directory" on the command line (in the
	      case of sendmail(1), with "-C config_directory"), 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 commands.

       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 directory.

       syslog_facility (mail)
	      The syslog facility of Postfix logging.

       syslog_name (see 'postconf -d' output)
	      A prefix that is prepended to the process name in syslog records, so that, for example, "smtpd" becomes "prefix/smtpd".

       trigger_timeout (10s)
	      The time limit for sending a trigger to a Postfix daemon (for example, the pickup(8) or qmgr(8) daemon).

       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

       Use "postconf readme_directory" or "postconf html_directory" to locate this information.
       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

       Wietse Venema
       Google, Inc.
       111 8th Avenue
       New York, NY 10011, USA

																      POSTQUEUE(1)