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BOUNCE(8) 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 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 message is enqueued success-fully, successfully,
fully, 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 (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 exam-ples. examples.
ples.
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 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 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 incoming connec-tion connection
tion 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 (postfix)
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(8)
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