discard(8postfix) - man - phpMan

DISCARD(8postfix)                                                                  DISCARD(8postfix)



NAME
       discard - Postfix discard mail delivery agent

SYNOPSIS
       discard [generic Postfix daemon options]

DESCRIPTION
       The  Postfix  discard(8)  delivery  agent processes delivery requests from the queue manager.
       Each request specifies a queue file, a sender address, a next-hop destination that is treated
       as the reason for discarding the mail, and recipient information.  The reason may be prefixed
       with an RFC 3463-compatible detail code.  This program expects to be run from  the  master(8)
       process manager.

       The  discard(8)  delivery  agent  pretends to deliver all recipients in the delivery request,
       logs the "next-hop" destination as the reason for discarding  the  mail,  updates  the  queue
       file,  and  either  marks  recipients  as finished or informs the queue manager that delivery
       should be tried again at a later time.

       Delivery status reports are sent to the trace(8) daemon as appropriate.

SECURITY
       The discard(8) mailer is not security-sensitive. It does not talk to the network, and can  be
       run chrooted at fixed low privilege.

STANDARDS
       RFC 3463 (Enhanced Status Codes)

DIAGNOSTICS
       Problems and transactions are logged to syslogd(8) or postlogd(8).

       Depending  on  the  setting  of  the  notify_classes parameter, the postmaster is notified of
       bounces and of other trouble.

CONFIGURATION PARAMETERS
       Changes to main.cf are picked up automatically as discard(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.

       daemon_timeout (18000s)
              How much time a Postfix daemon process may take to handle a request before it is  ter‐
              minated by a built-in watchdog timer.

       delay_logging_resolution_limit (2)
              The  maximal  number  of  digits after the decimal point when logging sub-second delay
              values.

       double_bounce_sender (double-bounce)
              The sender address of postmaster notifications that are generated by the mail system.

       ipc_timeout (3600s)
              The time limit for sending or receiving information  over  an  internal  communication
              channel.

       max_idle (100s)
              The  maximum  amount of time that an idle Postfix daemon process waits for an incoming
              connection before terminating voluntarily.

       max_use (100)
              The maximal number of incoming connections that a Postfix daemon process will  service
              before terminating voluntarily.

       process_id (read-only)
              The process ID of a Postfix command or daemon process.

       process_name (read-only)
              The process name of a Postfix command or daemon 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 exam‐
              ple, "smtpd" becomes "prefix/smtpd".

       Available in Postfix 3.3 and later:

       service_name (read-only)
              The master.cf service name of a Postfix daemon process.

SEE ALSO
       qmgr(8), queue manager
       bounce(8), delivery status reports
       error(8), Postfix error delivery agent
       postconf(5), configuration parameters
       master(5), generic daemon options
       master(8), process manager
       postlogd(8), Postfix logging
       syslogd(8), system logging

LICENSE
       The Secure Mailer license must be distributed with this software.

HISTORY
       This service was introduced with Postfix version 2.2.

AUTHOR(S)
       Victor Duchovni
       Morgan Stanley

       Based on code by:
       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



                                                                                   DISCARD(8postfix)