1BOUNCE(8)                   System Manager's Manual                  BOUNCE(8)
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NAME

6       bounce - Postfix delivery status reports
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SYNOPSIS

9       bounce [generic Postfix daemon options]
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DESCRIPTION

12       The bounce(8) daemon maintains per-message log files with delivery sta‐
13       tus information. Each log file is named after the queue  file  that  it
14       corresponds  to,  and  is  kept in a queue subdirectory named after the
15       service name in the master.cf file (either  bounce,  defer  or  trace).
16       This program expects to be run from the master(8) process manager.
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18       The bounce(8) daemon processes two types of service requests:
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20       •      Append a recipient (non-)delivery status record to a per-message
21              log file.
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23       •      Enqueue a delivery status notification message, with a copy of a
24              per-message log file and of the corresponding message.  When the
25              delivery status notification message is  enqueued  successfully,
26              the per-message log file is deleted.
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28       The  software does a best notification effort. A non-delivery notifica‐
29       tion is sent even when the log file or the original message  cannot  be
30       read.
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32       Optionally,  a  bounce  (defer,  trace)  client  can  request  that the
33       per-message log file be deleted when  the  requested  operation  fails.
34       This  is  used by clients that cannot retry transactions by themselves,
35       and that depend on retry logic in their own client.
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STANDARDS

38       RFC 822 (ARPA Internet Text Messages)
39       RFC 2045 (Format of Internet Message Bodies)
40       RFC 2822 (Internet Message Format)
41       RFC 3462 (Delivery Status Notifications)
42       RFC 3464 (Delivery Status Notifications)
43       RFC 3834 (Auto-Submitted: message header)
44       RFC 5322 (Internet Message Format)
45       RFC 6531 (Internationalized SMTP)
46       RFC 6532 (Internationalized Message Format)
47       RFC 6533 (Internationalized Delivery Status Notifications)
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DIAGNOSTICS

50       Problems and transactions are logged to syslogd(8) or postlogd(8).
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CONFIGURATION PARAMETERS

53       Changes to main.cf are picked up automatically, as bounce(8)  processes
54       run for only a limited amount of time. Use the command "postfix reload"
55       to speed up a change.
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57       The text below provides only a parameter summary. See  postconf(5)  for
58       more details including examples.
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60       2bounce_notice_recipient (postmaster)
61              The  recipient  of undeliverable mail that cannot be returned to
62              the sender.
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64       backwards_bounce_logfile_compatibility (yes)
65              Produce additional bounce(8) logfile records that can be read by
66              Postfix versions before 2.0.
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68       bounce_notice_recipient (postmaster)
69              The recipient of postmaster notifications with the message head‐
70              ers of mail that Postfix did not deliver and of  SMTP  conversa‐
71              tion transcripts of mail that Postfix did not receive.
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73       bounce_size_limit (50000)
74              The  maximal  amount  of original message text that is sent in a
75              non-delivery notification.
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77       bounce_template_file (empty)
78              Pathname of a configuration file with bounce message templates.
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80       config_directory (see 'postconf -d' output)
81              The default location of the Postfix main.cf and  master.cf  con‐
82              figuration files.
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84       daemon_timeout (18000s)
85              How  much time a Postfix daemon process may take to handle a re‐
86              quest before it is terminated by a built-in watchdog timer.
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88       delay_notice_recipient (postmaster)
89              The recipient of postmaster notifications with the message head‐
90              ers  of mail that cannot be delivered within $delay_warning_time
91              time units.
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93       deliver_lock_attempts (20)
94              The maximal number of attempts to acquire an exclusive lock on a
95              mailbox file or bounce(8) logfile.
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97       deliver_lock_delay (1s)
98              The  time  between  attempts  to  acquire an exclusive lock on a
99              mailbox file or bounce(8) logfile.
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101       ipc_timeout (3600s)
102              The time limit for sending or receiving information over an  in‐
103              ternal communication channel.
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105       internal_mail_filter_classes (empty)
106              What  categories  of  Postfix-generated  mail are subject to be‐
107              fore-queue    content    inspection    by     non_smtpd_milters,
108              header_checks and body_checks.
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110       mail_name (Postfix)
111              The  mail system name that is displayed in Received: headers, in
112              the SMTP greeting banner, and in bounced mail.
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114       max_idle (100s)
115              The maximum amount of time that an idle Postfix  daemon  process
116              waits for an incoming connection before terminating voluntarily.
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118       max_use (100)
119              The maximal number of incoming connections that a Postfix daemon
120              process will service before terminating voluntarily.
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122       notify_classes (resource, software)
123              The list of error classes that are reported to the postmaster.
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125       process_id (read-only)
126              The process ID of a Postfix command or daemon process.
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128       process_name (read-only)
129              The process name of a Postfix command or daemon process.
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131       queue_directory (see 'postconf -d' output)
132              The location of the Postfix top-level queue directory.
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134       syslog_facility (mail)
135              The syslog facility of Postfix logging.
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137       syslog_name (see 'postconf -d' output)
138              A prefix that  is  prepended  to  the  process  name  in  syslog
139              records, so that, for example, "smtpd" becomes "prefix/smtpd".
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141       Available in Postfix 3.0 and later:
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143       smtputf8_autodetect_classes (sendmail, verify)
144              Detect  that  a message requires SMTPUTF8 support for the speci‐
145              fied mail origin classes.
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147       Available in Postfix 3.3 and later:
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149       service_name (read-only)
150              The master.cf service name of a Postfix daemon process.
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152       Available in Postfix 3.6 and later:
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154       enable_threaded_bounces (no)
155              Enable non-delivery, success, and delay notifications that  link
156              to  the  original  message by including a References: and In-Re‐
157              ply-To: header with the original Message-ID value.
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159       Available in Postfix 3.7 and later:
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161       header_from_format (standard)
162              The format of the Postfix-generated From: header.
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FILES

165       /var/spool/postfix/bounce/* non-delivery records
166       /var/spool/postfix/defer/* non-delivery records
167       /var/spool/postfix/trace/* delivery status records
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SEE ALSO

170       bounce(5), bounce message template format
171       qmgr(8), queue manager
172       postconf(5), configuration parameters
173       master(5), generic daemon options
174       master(8), process manager
175       postlogd(8), Postfix logging
176       syslogd(8), system logging
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LICENSE

179       The Secure Mailer license must be distributed with this software.
180

AUTHOR(S)

182       Wietse Venema
183       IBM T.J. Watson Research
184       P.O. Box 704
185       Yorktown Heights, NY 10598, USA
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187       Wietse Venema
188       Google, Inc.
189       111 8th Avenue
190       New York, NY 10011, USA
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194                                                                     BOUNCE(8)
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