bounce − Postfix delivery status reports
bounce [generic Postfix daemon options]
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 successfully, 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.
RFC 822 (ARPA
Internet Text Messages)
RFC 2045 (Format of Internet Message Bodies)
RFC 2822 (Internet Message Format)
RFC 3462 (Delivery Status Notifications)
RFC 3464 (Delivery Status Notifications)
RFC 3834 (Auto-Submitted: message header)
RFC 5322 (Internet Message Format)
Problems and transactions are logged to syslogd(8).
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.
The recipient of undeliverable mail that cannot be returned to the sender.
Produce additional bounce(8) logfile records that can be read by Postfix versions before 2.0.
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.
The maximal amount of original message text that is sent in a non-delivery notification.
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.
How much time a Postfix daemon process may take to handle a request before it is terminated by a built-in watchdog timer.
The recipient of postmaster notifications with the message headers of mail that cannot be delivered within $delay_warning_time time units.
The maximal number of attempts to acquire an exclusive lock on a mailbox file or bounce(8) logfile.
The time between attempts to acquire an exclusive lock on a mailbox file or bounce(8) logfile.
The time limit for sending or receiving information over an internal communication channel.
What categories of Postfix-generated mail are subject to before-queue content inspection by non_smtpd_milters, header_checks and body_checks.
The mail system name that is displayed in Received: headers, in the SMTP greeting banner, and in bounced mail.
The maximum amount of time that an idle Postfix daemon process waits for an incoming connection before terminating voluntarily.
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.
The process ID of a Postfix command or daemon process.
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.
The syslog facility of Postfix logging.
syslog_name (see ’postconf -d’ output)
The mail system name that is prepended to the process name in syslog records, so that "smtpd" becomes, for example, "postfix/smtpd".
/var/spool/postfix/defer/* non-delivery records
/var/spool/postfix/trace/* delivery status records
The Secure Mailer license must be distributed with this software.
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.