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, defer or trace). This program expects to be run from the master(8) process manager. The bounce daemon processes two types of service requests:

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

•   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 themselves, and that depend on retry logic in their own client.

STANDARDS
RFC 822 (ARPA Internet Text Messages)
RFC 1894 (Delivery Status Notifications)
RFC 2045 (Format of Internet Message Bodies)

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.

backwards_bounce_logfile_compatibility
    Controls whether the logfile will be readable by old Postfix versions that used the ad-hoc logfile format of <address>: text.

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