1BOUNCE(8) System Manager's Manual BOUNCE(8)
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6 bounce - Postfix delivery status reports
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9 bounce [generic Postfix daemon options]
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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.
17 The bounce(8) daemon processes two types of service requests:
19 • Append a recipient (non-)delivery status record to a per-message
21 log file.
22 • 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.
27 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.
31 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.
36
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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50 Problems and transactions are logged to syslogd(8) or postlogd(8).
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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.
56 The text below provides only a parameter summary. See postconf(5) for
58 more details including examples.
59 2bounce_notice_recipient (postmaster)
61 The recipient of undeliverable mail that cannot be returned to
62 the sender.
63 backwards_bounce_logfile_compatibility (yes)
65 Produce additional bounce(8) logfile records that can be read by
66 Postfix versions before 2.0.
67 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.
72 bounce_size_limit (50000)
74 The maximal amount of original message text that is sent in a
75 non-delivery notification.
76 bounce_template_file (empty)
78 Pathname of a configuration file with bounce message templates.
79 config_directory (see 'postconf -d' output)
81 The default location of the Postfix main.cf and master.cf con‐
82 figuration files.
83 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.
87 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.
92 deliver_lock_attempts (20)
94 The maximal number of attempts to acquire an exclusive lock on a
95 mailbox file or bounce(8) logfile.
96 deliver_lock_delay (1s)
98 The time between attempts to acquire an exclusive lock on a
99 mailbox file or bounce(8) logfile.
100 ipc_timeout (3600s)
102 The time limit for sending or receiving information over an in‐
103 ternal communication channel.
104 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.
109 mail_name (Postfix)
111 The mail system name that is displayed in Received: headers, in
112 the SMTP greeting banner, and in bounced mail.
113 max_idle (100s)
115 The maximum amount of time that an idle Postfix daemon process
116 waits for an incoming connection before terminating voluntarily.
117 max_use (100)
119 The maximal number of incoming connections that a Postfix daemon
120 process will service before terminating voluntarily.
121 notify_classes (resource, software)
123 The list of error classes that are reported to the postmaster.
124 process_id (read-only)
126 The process ID of a Postfix command or daemon process.
127 process_name (read-only)
129 The process name of a Postfix command or daemon process.
130 queue_directory (see 'postconf -d' output)
132 The location of the Postfix top-level queue directory.
133 syslog_facility (mail)
135 The syslog facility of Postfix logging.
136 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".
140 Available in Postfix 3.0 and later:
142 smtputf8_autodetect_classes (sendmail, verify)
144 Detect that a message requires SMTPUTF8 support for the speci‐
145 fied mail origin classes.
146 Available in Postfix 3.3 and later:
148 service_name (read-only)
150 The master.cf service name of a Postfix daemon process.
151 Available in Postfix 3.6 and later:
153 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.
158 Available in Postfix 3.7 and later:
160 header_from_format (standard)
162 The format of the Postfix-generated From: header.
163
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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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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179 The Secure Mailer license must be distributed with this software.
180
182 Wietse Venema
183 IBM T.J. Watson Research
184 P.O. Box 704
185 Yorktown Heights, NY 10598, USA
186 Wietse Venema
188 Google, Inc.
189 111 8th Avenue
190 New York, NY 10011, USA
191 BOUNCE(8)