BOUNCE(8) BOUNCE(8)
NAME
bounce - Postfix message bounce or defer daemon
SYNOPSIS
bounce [generic Postfix daemon options]
DESCRIPTION
The bounce(8) 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 man-
ager.
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 bounce message, with a copy of a per-mes-
sage log file and of the corresponding message.
When the bounce message is enqueued successfully,
the per-message log file is deleted.
The software does a best notification effort. A non-deliv-
ery 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 2822 (ARPA Internet Text Messages)
RFC 3462 (Delivery Status Notifications)
RFC 3464 (Delivery Status Notifications)
RFC 2045 (Format of Internet Message Bodies)
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 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.
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 exclu-
sive 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.
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 the next service request
before exiting.
max_use (100)
The maximal number of connection requests before a
Postfix daemon process terminates.
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 direc-
tory.
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
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)
