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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 pro-
       gram expects to be run from the master(8) process manager.

       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 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 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.

       bounce_template_file (empty)
              Pathname  of  a configuration file with bounce mes-
              sage 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 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.

       internal_mail_filter_classes (empty)
              What categories of Postfix-generated mail are  sub-
              ject   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 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
       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)