7
Postfix discard mail delivery agent
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\fBdiscard\fR [generic Postfix daemon options]
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The Postfix \fBdiscard\fR(8) delivery agent processes
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delivery requests from
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the queue manager. Each request specifies a queue file, a sender
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address, a domain or host name that is treated as the reason for
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discarding the mail, and recipient information.
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This program expects to be run from the \fBmaster\fR(8) process
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The \fBdiscard\fR(8) delivery agent pretends to deliver all recipients
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in the delivery request, logs the "next-hop" domain or host
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information as the reason for discarding the mail, updates the
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queue file and marks recipients as finished or informs the
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queue manager that delivery should be tried again at a later time.
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Delivery status reports are sent to the \fBtrace\fR(8)
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daemon as appropriate.
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The \fBdiscard\fR(8) mailer is not security-sensitive. It does not talk
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to the network, and can be run chrooted at fixed low privilege.
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Problems and transactions are logged to \fBsyslogd\fR(8).
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Depending on the setting of the \fBnotify_classes\fR parameter,
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the postmaster is notified of bounces and of other trouble.
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.SH "CONFIGURATION PARAMETERS"
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Changes to \fBmain.cf\fR are picked up automatically as \fBdiscard\fR(8)
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processes run for only a limited amount of time. Use the command
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"\fBpostfix reload\fR" to speed up a change.
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The text below provides only a parameter summary. See
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\fBpostconf\fR(5) for more details including examples.
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.IP "\fBconfig_directory (see 'postconf -d' output)\fR"
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The default location of the Postfix main.cf and master.cf
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.IP "\fBdaemon_timeout (18000s)\fR"
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How much time a Postfix daemon process may take to handle a
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request before it is terminated by a built-in watchdog timer.
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.IP "\fBdouble_bounce_sender (double-bounce)\fR"
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The sender address of postmaster notifications that are generated
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.IP "\fBipc_timeout (3600s)\fR"
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The time limit for sending or receiving information over an internal
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communication channel.
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.IP "\fBmax_idle (100s)\fR"
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The maximum amount of time that an idle Postfix daemon process
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waits for the next service request before exiting.
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.IP "\fBmax_use (100)\fR"
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The maximal number of connection requests before a Postfix daemon
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.IP "\fBprocess_id (read-only)\fR"
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The process ID of a Postfix command or daemon process.
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.IP "\fBprocess_name (read-only)\fR"
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The process name of a Postfix command or daemon process.
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.IP "\fBqueue_directory (see 'postconf -d' output)\fR"
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The location of the Postfix top-level queue directory.
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.IP "\fBsyslog_facility (mail)\fR"
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The syslog facility of Postfix logging.
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.IP "\fBsyslog_name (postfix)\fR"
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The mail system name that is prepended to the process name in syslog
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records, so that "smtpd" becomes, for example, "postfix/smtpd".
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qmgr(8), queue manager
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bounce(8), delivery status reports
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error(8), Postfix error delivery agent
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postconf(5), configuration parameters
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master(5), generic daemon options
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master(8), process manager
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syslogd(8), system logging
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The Secure Mailer license must be distributed with this software.
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This service was introduced with Postfix version 2.2.
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IBM T.J. Watson Research
119
Yorktown Heights, NY 10598, USA
added
removed
man/man8/discard.8
