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BOUNCE(8)		    System Manager's Manual		     BOUNCE(8)

       bounce -	Postfix	delivery status	reports

       bounce [generic Postfix daemon options]

       The bounce(8) 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 file (either  bounce,  defer  or  trace).
       This program expects to be run from the master(8) process manager.

       The bounce(8) daemon processes two types	of service requests:

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

       o      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

       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.

       RFC 822 (ARPA Internet Text Messages)
       RFC 2045	(Format	of Internet Message Bodies)
       RFC 2822	(Internet Message Format)
       RFC 3462	(Delivery Status Notifications)
       RFC 3464	(Delivery Status Notifications)
       RFC 3834	(Auto-Submitted: message header)
       RFC 5322	(Internet Message Format)
       RFC 6531	(Internationalized SMTP)
       RFC 6532	(Internationalized Message Format)
       RFC 6533	(Internationalized Delivery Status Notifications)

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

       Changes to are picked up	automatically, as bounce(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.

       2bounce_notice_recipient	(postmaster)
	      The  recipient  of undeliverable mail that cannot	be returned to
	      the sender.

       backwards_bounce_logfile_compatibility (yes)
	      Produce additional bounce(8) logfile records that	can be read by
	      Postfix versions before 2.0.

       bounce_notice_recipient (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.

       bounce_size_limit (50000)
	      The  maximal  amount  of original	message	text that is sent in a
	      non-delivery notification.

       bounce_template_file (empty)
	      Pathname of a configuration file with bounce message templates.

       config_directory	(see 'postconf -d' output)
	      The default location of the Postfix and  con-
	      figuration files.

       daemon_timeout (18000s)
	      How  much	time a Postfix daemon process may take to handle a re-
	      quest before it is terminated by a built-in watchdog timer.

       delay_notice_recipient (postmaster)
	      The recipient of postmaster notifications	with the message head-
	      ers  of mail that	cannot be delivered within $delay_warning_time
	      time units.

       deliver_lock_attempts (20)
	      The maximal number of attempts to	acquire	an exclusive lock on a
	      mailbox file or bounce(8)	logfile.

       deliver_lock_delay (1s)
	      The  time	 between  attempts  to	acquire	an exclusive lock on a
	      mailbox file or bounce(8)	logfile.

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

       internal_mail_filter_classes (empty)
	      What  categories	of  Postfix-generated  mail are	subject	to be-
	      fore-queue    content    inspection    by	    non_smtpd_milters,
	      header_checks and	body_checks.

       mail_name (Postfix)
	      The  mail	system name that is displayed in Received: headers, in
	      the SMTP greeting	banner,	and in bounced mail.

       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.

       notify_classes (resource, software)
	      The list of error	classes	that are reported to the postmaster.

       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 example, "smtpd" becomes "prefix/smtpd".

       Available in Postfix 3.0	and later:

       smtputf8_autodetect_classes (sendmail, verify)
	      Detect  that  a message requires SMTPUTF8	support	for the	speci-
	      fied mail	origin classes.

       Available in Postfix 3.3	and later:

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

       /var/spool/postfix/bounce/* non-delivery	records
       /var/spool/postfix/defer/* non-delivery records
       /var/spool/postfix/trace/* delivery status records

       bounce(5), bounce message template format
       qmgr(8),	queue manager
       postconf(5), configuration parameters
       master(5), generic daemon options
       master(8), process manager
       postlogd(8), Postfix logging
       syslogd(8), system logging

       The Secure Mailer license must be distributed with this software.

       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



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