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



NAME
       bounce - Postfix delivery status reports

SYNOPSIS
       bounce [generic Postfix daemon options]

DESCRIPTION
       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 master.cf 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
       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.

STANDARDS
       RFC 822 (ARPA Internet Text Messages)
       RFC 2045 (Format of Internet Message Bodies)
       RFC 2822 (ARPA Internet Text Messages)
       RFC 3462 (Delivery Status Notifications)
       RFC 3464 (Delivery Status Notifications)
       RFC 3834 (Auto-Submitted: message header)

DIAGNOSTICS
       Problems and transactions are logged to syslogd(8).

CONFIGURATION PARAMETERS
       Changes to main.cf 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 main.cf and  master.cf  con-
	      figuration files.

       daemon_timeout (18000s)
	      How  much	 time  a  Postfix  daemon process may take to handle a
	      request 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
	      internal communication channel.

       internal_mail_filter_classes (empty)
	      What categories of Postfix-generated mail are subject to before-
	      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)
	      The mail system name that is prepended to the  process  name  in
	      syslog  records,	so  that  "smtpd" becomes, for example, "post-
	      fix/smtpd".

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

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

LICENSE
       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



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