    BOUNCE(8)                                               BOUNCE(8)

    NAME
           bounce - Postfix message bounce or defer daemon

    SYNOPSIS
           bounce [generic Postfix daemon options]

    DESCRIPTION
           The  bounce  daemon  maintains  per-message log files with
           non-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 or defer).  This program
           expects to be run from the master(8) process manager.

           The bounce daemon processes two types of service requests:

           o      Append  a  recipient status record to a per-message
                  log file.

           o      Post a bounce message, with a copy of  a  log  file
                  and  of  the corresponding message. When the bounce
                  is posted successfully, the log file is deleted.

           The software does a best effort to notify the sender  that
           there  was a problem. A notification is sent even when the
           log file or original message cannot be read.

           Optionally, a 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 them-
           selves,  and  that  depend  on  retry  logic  in their own
           client.

    STANDARDS
           RFC 822 (ARPA Internet Text Messages)
           RFC 1894 (Delivery Status Notifications)

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

    BUGS
           The log files use an  ad-hoc,  unstructured  format.  This
           will  have  to  change in order to easily support standard
           delivery status notifications.

    CONFIGURATION PARAMETERS
           The following main.cf parameters are  especially  relevant
           to  this  program. See the Postfix main.cf file for syntax
           details and for default values.  Use  the  postfix  reload
           command after a configuration change.

           bounce_notice_recipient
                  The  recipient of single bounce postmaster notices.

           2bounce_notice_recipient
                  The recipient of double bounce postmaster  notices.

           delay_notice_recipient
                  The recipient of "delayed mail" postmaster notices.

           bounce_size_limit
                  Limit the amount of original message  context  that
                  is sent in a non-delivery notification.

           mail_name
                  Use  this mail system name in the introductory text
                  at the start of a bounce message.

           notify_classes
                  Notify the postmaster of  bounced  mail  when  this
                  parameter  includes  the  bounce class. For privacy
                  reasons, the message body is not included.

    SEE ALSO
           master(8) process manager
           qmgr(8) queue 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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