BOUNCE(8postfix)                                                                 BOUNCE(8postfix)



NAME
       bounce - Postfix delivery status reports

SYNOPSIS
       bounce [generic Postfix daemon options]

DESCRIPTION
       The  bounce(8)  daemon  maintains  per-message log files with delivery status 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:

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

       ·      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 mes‐
              sage is enqueued successfully, the per-message log file is deleted.

       The software does a best notification effort. A non-delivery  notification  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 (Internet Message Format)
       RFC 3462 (Delivery Status Notifications)
       RFC 3464 (Delivery Status Notifications)
       RFC 3834 (Auto-Submitted: message header)
       RFC 5322 (Internet Message Format)

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 lim‐
       ited 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 includ‐
       ing 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  headers  of  mail  that
              Postfix  did  not deliver and of SMTP conversation 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  notifi‐
              cation.

       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 configuration 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  headers  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  incom‐
              ing connection before terminating voluntarily.

       max_use (100)
              The  maximal number of incoming connections that a Postfix daemon process will ser‐
              vice 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, "postfix/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



                                                                                 BOUNCE(8postfix)