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<title> Postfix manual - error(8) </title>
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error - Postfix error mail delivery agent
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<b>error</b> [generic Postfix daemon options]
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The Postfix error delivery agent processes delivery
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requests from the queue manager. Each request specifies a
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queue file, a sender address, a domain or host name that
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is treated as the reason for non-delivery, and recipient
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information. This program expects to be run from the <a href="master.8.html"><b>mas-</b></a>
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<a href="master.8.html"><b>ter</b>(8)</a> process manager.
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The error delivery agent bounces all recipients in the
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delivery request using the "next-hop" domain or host
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information as the reason for non-delivery, 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
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Delivery status reports are sent to the <a href="bounce.8.html"><b>bounce</b>(8)</a>,
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<a href="defer.8.html"><b>defer</b>(8)</a> or <a href="trace.8.html"><b>trace</b>(8)</a> daemon as appropriate.
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The error mailer is not security-sensitive. It does not
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talk to the network, and can be run chrooted at fixed low
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Problems and transactions are logged to <b>syslogd</b>(8).
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Depending on the setting of the <b><a href="postconf.5.html#notify_classes">notify_classes</a></b> parameter,
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the postmaster is notified of bounces and of other trou-
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<b>CONFIGURATION PARAMETERS</b>
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Changes to <b>main.cf</b> are picked up automatically as <a href="error.8.html">error(8)</a>
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processes run for only a limited amount of time. Use the
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command "<b>postfix reload</b>" to speed up a change.
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The text below provides only a parameter summary. See
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<a href="postconf.5.html">postconf(5)</a> for more details including examples.
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<b><a href="postconf.5.html#2bounce_notice_recipient">2bounce_notice_recipient</a> (postmaster)</b>
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The recipient of undeliverable mail that cannot be
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returned to the sender.
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<b><a href="postconf.5.html#bounce_notice_recipient">bounce_notice_recipient</a> (postmaster)</b>
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The recipient of postmaster notifications with the
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message headers of mail that Postfix did not
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deliver and of SMTP conversation transcripts of
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mail that Postfix did not receive.
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<b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b>
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The default location of the Postfix main.cf and
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master.cf configuration files.
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<b><a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)</b>
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How much time a Postfix daemon process may take to
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handle a request before it is terminated by a
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built-in watchdog timer.
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<b><a href="postconf.5.html#double_bounce_sender">double_bounce_sender</a> (double-bounce)</b>
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The sender address of postmaster notifications that
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are generated by the mail system.
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<b><a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)</b>
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The time limit for sending or receiving information
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over an internal communication channel.
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<b><a href="postconf.5.html#max_idle">max_idle</a> (100s)</b>
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The maximum amount of time that an idle Postfix
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daemon process waits for the next service request
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<b><a href="postconf.5.html#max_use">max_use</a> (100)</b>
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The maximal number of connection requests before a
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Postfix daemon process terminates.
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<b><a href="postconf.5.html#notify_classes">notify_classes</a> (resource, software)</b>
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The list of error classes that are reported to the
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<b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b>
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The process ID of a Postfix command or daemon pro-
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<b><a href="postconf.5.html#process_name">process_name</a> (read-only)</b>
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The process name of a Postfix command or daemon
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<b><a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)</b>
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The location of the Postfix top-level queue direc-
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<b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b>
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The syslog facility of Postfix logging.
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<b><a href="postconf.5.html#syslog_name">syslog_name</a> (postfix)</b>
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The mail system name that is prepended to the pro-
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cess name in syslog records, so that "smtpd"
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becomes, for example, "postfix/smtpd".
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<a href="qmgr.8.html">qmgr(8)</a>, queue manager
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<a href="bounce.8.html">bounce(8)</a>, delivery status reports
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<a href="postconf.5.html">postconf(5)</a>, configuration parameters
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<a href="master.8.html">master(8)</a>, process manager
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syslogd(8), system logging
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The Secure Mailer license must be distributed with this
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IBM T.J. Watson Research
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Yorktown Heights, NY 10598, USA
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