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<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html> <head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<title> Postfix manual - bounce(8) </title>
</head> <body> <pre>
BOUNCE(8)                                                            BOUNCE(8)

<b>NAME</b>
       bounce - Postfix delivery status reports

<b>SYNOPSIS</b>
       <b>bounce</b> [generic Postfix daemon options]

<b>DESCRIPTION</b>
       The <a href="bounce.8.html"><b>bounce</b>(8)</a> daemon maintains per-message log files with delivery sta-
       tus information. Each log file is named after the queue  file  that  it
       corresponds  to,  and  is  kept in a queue subdirectory named after the
       service name in the <a href="master.5.html"><b>master.cf</b></a> file (either  <b>bounce</b>,  <b>defer</b>  or  <b>trace</b>).
       This program expects to be run from the <a href="master.8.html"><b>master</b>(8)</a> process manager.

       The <a href="bounce.8.html"><b>bounce</b>(8)</a> daemon processes two types of service requests:

       <b>o</b>      Append a recipient (non-)delivery status record to a per-message
              log file.

       <b>o</b>      Enqueue a delivery status notification message, with a copy of a
              per-message log file and of the corresponding message.  When the
              delivery status notification message is  enqueued  successfully,
              the per-message log file is deleted.

       The  software does a best notification effort. A non-delivery notifica-
       tion is sent even when the log file or the original message  cannot  be
       read.

       Optionally,  a  bounce  (defer, trace) client can request that the per-
       message log file be deleted when the requested operation  fails.   This
       is  used  by  clients that cannot retry transactions by themselves, and
       that depend on retry logic in their own client.

<b>STANDARDS</b>
       <a href="http://tools.ietf.org/html/rfc822">RFC 822</a> (ARPA Internet Text Messages)
       <a href="http://tools.ietf.org/html/rfc2045">RFC 2045</a> (Format of Internet Message Bodies)
       <a href="http://tools.ietf.org/html/rfc2822">RFC 2822</a> (Internet Message Format)
       <a href="http://tools.ietf.org/html/rfc3462">RFC 3462</a> (Delivery Status Notifications)
       <a href="http://tools.ietf.org/html/rfc3464">RFC 3464</a> (Delivery Status Notifications)
       <a href="http://tools.ietf.org/html/rfc3834">RFC 3834</a> (Auto-Submitted: message header)
       <a href="http://tools.ietf.org/html/rfc5322">RFC 5322</a> (Internet Message Format)

<b>DIAGNOSTICS</b>
       Problems and transactions are logged to <b>syslogd</b>(8).

<b>CONFIGURATION PARAMETERS</b>
       Changes to <a href="postconf.5.html"><b>main.cf</b></a> are picked up automatically, as <a href="bounce.8.html"><b>bounce</b>(8)</a>  processes
       run for only a limited amount of time. Use the command "<b>postfix reload</b>"
       to speed up a change.

       The text below provides only a parameter summary. See  <a href="postconf.5.html"><b>postconf</b>(5)</a>  for
       more details including examples.

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

       <b><a href="postconf.5.html#backwards_bounce_logfile_compatibility">backwards_bounce_logfile_compatibility</a> (yes)</b>
              Produce additional <a href="bounce.8.html"><b>bounce</b>(8)</a> logfile records that can be read by
              Postfix versions before 2.0.

       <b><a href="postconf.5.html#bounce_notice_recipient">bounce_notice_recipient</a> (postmaster)</b>
              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.

       <b><a href="postconf.5.html#bounce_size_limit">bounce_size_limit</a> (50000)</b>
              The  maximal  amount  of original message text that is sent in a
              non-delivery notification.

       <b><a href="postconf.5.html#bounce_template_file">bounce_template_file</a> (empty)</b>
              Pathname of a configuration file with bounce message  templates.

       <b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b>
              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.

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

       <b><a href="postconf.5.html#delay_notice_recipient">delay_notice_recipient</a> (postmaster)</b>
              The recipient of postmaster notifications with the message head-
              ers of mail that cannot be delivered within  $<a href="postconf.5.html#delay_warning_time">delay_warning_time</a>
              time units.

       <b><a href="postconf.5.html#deliver_lock_attempts">deliver_lock_attempts</a> (20)</b>
              The maximal number of attempts to acquire an exclusive lock on a
              mailbox file or <a href="bounce.8.html"><b>bounce</b>(8)</a> logfile.

       <b><a href="postconf.5.html#deliver_lock_delay">deliver_lock_delay</a> (1s)</b>
              The time between attempts to acquire  an  exclusive  lock  on  a
              mailbox file or <a href="bounce.8.html"><b>bounce</b>(8)</a> logfile.

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

       <b><a href="postconf.5.html#internal_mail_filter_classes">internal_mail_filter_classes</a> (empty)</b>
              What categories of Postfix-generated mail are subject to before-
              queue content inspection by <a href="postconf.5.html#non_smtpd_milters">non_smtpd_milters</a>, <a href="postconf.5.html#header_checks">header_checks</a> and
              <a href="postconf.5.html#body_checks">body_checks</a>.

       <b><a href="postconf.5.html#mail_name">mail_name</a> (Postfix)</b>
              The mail system name that is displayed in Received: headers,  in
              the SMTP greeting banner, and in bounced mail.

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

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

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

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

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

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

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

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

<b>FILES</b>
       /var/spool/postfix/bounce/* non-delivery records
       /var/spool/postfix/defer/* non-delivery records
       /var/spool/postfix/trace/* delivery status records

<b>SEE ALSO</b>
       <a href="bounce.5.html">bounce(5)</a>, bounce message template format
       <a href="qmgr.8.html">qmgr(8)</a>, queue manager
       <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
       syslogd(8), system logging

<b>LICENSE</b>
       The Secure Mailer license must be distributed with this software.

<b>AUTHOR(S)</b>
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

                                                                     BOUNCE(8)
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