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ERROR(8) ERROR(8)

<a name="name">NAME</a>
 error - Postfix error/retry mail delivery agent

<a name="synopsis">SYNOPSIS</a>
 error [generic Postfix daemon options]

<a name="description">DESCRIPTION</a>
 The Postfix <a href="error.8.html">error(8)</a> delivery agent processes delivery requests from
 the queue manager. Each request specifies a queue file, a sender
 address, the reason for non-delivery (specified as the next-hop desti-
 nation), and recipient information. The reason may be prefixed with an
 <a href="https://tools.ietf.org/html/rfc3463">RFC 3463</a>-compatible detail code; if none is specified a default 4.0.0
 or 5.0.0 code is used instead. This program expects to be run from the
 <a href="master.8.html">master(8)</a> process manager.

 Depending on the service name in <a href="master.5.html">master.cf</a>, error or retry, the server
 bounces or defers all recipients in the delivery request using the
 "next-hop" information as the reason for non-delivery. The retry ser-
 vice name is supported as of Postfix 2.4.

 Delivery status reports are sent to the <a href="bounce.8.html">bounce(8)</a>, <a href="defer.8.html">defer(8)</a> or <a href="trace.8.html">trace(8)</a>
 daemon as appropriate.

<a name="security">SECURITY</a>
 The <a href="error.8.html">error(8)</a> mailer is not security-sensitive. It does not talk to the
 network, and can be run chrooted at fixed low privilege.

<a name="standards">STANDARDS</a>
 <a href="https://tools.ietf.org/html/rfc3463">RFC 3463</a> (Enhanced Status Codes)

<a name="diagnostics">DIAGNOSTICS</a>
 Problems and transactions are logged to syslogd(8) or <a href="postlogd.8.html">postlogd(8)</a>.

 Depending on the setting of the <a href="postconf.5.html#notify_classes">notify_classes</a> parameter, the postmas-
 ter is notified of bounces and of other trouble.

<a name="configuration_parameters">CONFIGURATION PARAMETERS</a>
 Changes to <a href="postconf.5.html">main.cf</a> are picked up automatically as <a href="error.8.html">error(8)</a> 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 <a href="postconf.5.html">postconf(5)</a> for
 more details including examples.

 <a href="postconf.5.html#2bounce_notice_recipient">2bounce_notice_recipient</a> (postmaster)
 The recipient of undeliverable mail that cannot be returned to
 the sender.

 <a href="postconf.5.html#bounce_notice_recipient">bounce_notice_recipient</a> (postmaster)
 The recipient of postmaster notifications with the message head-
 ers of mail that Postfix did not deliver and of SMTP conversa-
 tion transcripts of mail that Postfix did not receive.

 <a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)
 The default location of the Postfix <a href="postconf.5.html">main.cf</a> and <a href="master.5.html">master.cf</a> con-
 figuration files.

 <a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)
 How much time a Postfix daemon process may take to handle a
 request before it is terminated by a built-in watchdog timer.

 <a href="postconf.5.html#delay_logging_resolution_limit">delay_logging_resolution_limit</a> (2)
 The maximal number of digits after the decimal point when log-
 ging delay values.

 <a href="postconf.5.html#double_bounce_sender">double_bounce_sender</a> (double-bounce)
 The sender address of postmaster notifications that are gener-
 ated by the mail system.

 <a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)
 The time limit for sending or receiving information over an
 internal communication channel.

 <a href="postconf.5.html#max_idle">max_idle</a> (100s)
 The maximum amount of time that an idle Postfix daemon process
 waits for an incoming connection before terminating voluntarily.

 <a href="postconf.5.html#max_use">max_use</a> (100)
 The maximal number of incoming connections that a Postfix daemon
 process will service before terminating voluntarily.

 <a href="postconf.5.html#notify_classes">notify_classes</a> (resource, software)
 The list of error classes that are reported to the postmaster.

 <a href="postconf.5.html#process_id">process_id</a> (read-only)
 The process ID of a Postfix command or daemon process.

 <a href="postconf.5.html#process_name">process_name</a> (read-only)
 The process name of a Postfix command or daemon process.

 <a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)
 The location of the Postfix top-level queue directory.

 <a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)
 The syslog facility of Postfix logging.

 <a href="postconf.5.html#syslog_name">syslog_name</a> (see 'postconf -d' output)
 A prefix that is prepended to the process name in syslog
 records, so that, for example, "smtpd" becomes "prefix/smtpd".

 Available in Postfix 3.3 and later:

 <a href="postconf.5.html#service_name">service_name</a> (read-only)
 The <a href="master.5.html">master.cf</a> service name of a Postfix daemon process.

<a name="see_also">SEE ALSO</a>
 <a href="qmgr.8.html">qmgr(8)</a>, queue manager
 <a href="bounce.8.html">bounce(8)</a>, delivery status reports
 <a href="discard.8.html">discard(8)</a>, Postfix discard delivery agent
 <a href="postconf.5.html">postconf(5)</a>, configuration parameters
 <a href="master.5.html">master(5)</a>, generic daemon options
 <a href="master.8.html">master(8)</a>, process manager
 <a href="postlogd.8.html">postlogd(8)</a>, Postfix logging
 syslogd(8), system logging

<a name="license">LICENSE</a>
 The Secure Mailer license must be distributed with this software.

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

 ERROR(8)
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