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#++
# NAME
# bounce 5
# SUMMARY
# Postfix bounce message template format
# SYNOPSIS
# \fBbounce_template_file = /etc/postfix/bounce.cf\fR
#
# \fBpostconf -b\fR [\fItemplate_file\fR]
# DESCRIPTION
# The Postfix \fBbounce\fR(8) server produces delivery status
# notification (DSN) messages for undeliverable mail, delayed
# mail, successful delivery or address verification requests.
#
# By default, these notifications are generated from built-in
# templates with message headers and message text. Sites can
# override the built-in information by specifying a bounce
# template file with the \fBbounce_template_file\fR configuration
# parameter.
#
# This document describes the general procedure to create a
# bounce template file, followed by the specific details of
# bounce template formats.
# GENERAL PROCEDURE
# .ad
# .fi
# To create a customized bounce template file, create a
# temporary
# copy of the file \fB/etc/postfix/bounce.cf.default\fR and
# edit the temporary file.
#
# To preview the results of $\fIname\fR expansions in the
# template text, use the command
#
# .nf
# \fBpostconf -b\fR \fItemporary_file\fR
# .fi
#
# Errors in the template will be reported to the standard
# error stream and to the syslog daemon.
#
# While previewing the text, be sure to pay particular attention
# to the expansion of time value parameters that appear in
# the delayed mail notification text.
#
# Once the result is satisfactory, copy the template to the
# Postfix configuration directory and specify in main.cf
# something like:
#
# .nf
# /etc/postfix/main.cf:
# bounce_template_file = /etc/postfix/bounce.cf
# .fi
# TEMPLATE FILE FORMAT
# .ad
# .fi
# The template file can specify templates for failed mail,
# delayed mail, successful delivery or for address verification.
# These templates are named \fBfailure_template\fR,
# \fBdelay_template\fR, \fBsuccess_template\fR and
# \fBverify_template\fR, respectively. You can but do not
# have to specify all four templates in a bounce template
# file.
#
# Each template starts with "\fItemplate_name\fB = <<EOF\fR"
# and ends with a line that contains the word "\fBEOF\fR"
# only. You can change the word EOF, but you can't enclose
# it in quotes as with the shell or with Perl (\fItemplate_name\fB
# = <<'EOF'\fR). Here is an example:
#
# .nf
# # The failure template is used for undeliverable mail.
#
# failure_template = <<EOF
# Charset: us-ascii
# From: MAILER-DAEMON (Mail Delivery System)
# Subject: Undelivered Mail Returned to Sender
# Postmaster-Subject: Postmaster Copy: Undelivered Mail
#
# This is the mail system at host $myhostname.
#
# I'm sorry to have to inform you that your message could not
# be delivered to one or more recipients. It's attached below.
#
# For further assistance, please send mail to postmaster.
#
# If you do so, please include this problem report. You can
# delete your own text from the attached returned message.
#
# The mail system
# EOF
# .fi
# .PP
# The usage and specification of bounce templates is
# subject to the following restrictions:
# .IP \(bu
# No special meaning is given to the backslash character or
# to leading whitespace; these are always taken literally.
# .IP \(bu
# Inside the << context, the "$" character is special. To
# produce a "$" character as output, specify "$$".
# .IP \(bu
# Outside the << context, lines beginning with "#" are ignored,
# as are empty lines, and lines consisting of whitespace only.
# .PP
# Examples of all templates can be found in the file
# \fBbounce.cf.default\fR in the Postfix configuration
# directory.
# TEMPLATE HEADER FORMAT
# .ad
# .fi
# The first portion of a bounce template consists of optional
# template headers. Some become message headers in the
# delivery status notification; some control the formatting
# of that notification. Headers not specified in a template
# will be left at their default value.
#
# The following headers are supported:
# .IP \fBCharset:\fR
# The MIME character set of the template message text. See
# the "TEMPLATE MESSAGE TEXT FORMAT" description below.
# .IP \fBFrom:\fR
# The sender address in the message header of the delivery
# status notification.
# .IP \fBSubject:\fR
# The subject in the message header of the delivery status
# notification that is returned to the sender.
# .IP \fBPostmaster-Subject:\fR
# The subject that will be used in Postmaster copies of
# undeliverable or delayed mail notifications. These copies
# are sent under control of the notify_classes configuration
# parameter.
# .PP
# The usage and specification of template message headers is
# subject to the following restrictions:
# .IP \(bu
# Template message header names can be specified in upper
# case, lower case or mixed case. Postfix always produces
# bounce message header labels of the form "\fBFrom:\fR" and
# "\fBSubject:\fR".
# .IP \(bu
# Template message headers must not span multiple lines.
# .IP \(bu
# Template message headers do not support $parameter expansions.
# .IP \(bu
# Template message headers must contain ASCII characters only,
# and must not contain ASCII null characters.
# TEMPLATE MESSAGE TEXT FORMAT
# .ad
# .fi
# The second portion of a bounce template consists of message
# text. As the above example shows, template message text may
# contain main.cf $parameters. Besides the parameters that are
# defined in main.cf, the following parameters are treated
# specially depending on the suffix that is appended to their
# name.
# .IP \fBdelay_warning_time_\fIsuffix\fR
# Expands into the value of the \fBdelay_warning_time\fR
# parameter, expressed in the time unit specified by
# \fIsuffix\fR, which is one of \fBseconds\fR, \fBminutes\fR,
# \fBhours\fB, \fBdays\fR, or \fBweeks\fR.
# .IP \fBmaximal_queue_lifetime_\fIsuffix\fR
# Expands into the value of the \fBmaximal_queue_lifetime\fR
# parameter, expressed in the time unit specified by
# \fIsuffix\fR. See above under \fBdelay_warning_time\fR for
# possible \fIsuffix\fR values.
# .IP \fBmydomain\fR
# Expands into the value of the \fBmydomain\fR parameter.
# With "smtputf8_enable = yes", this replaces ACE labels
# (xn--mumble) with their UTF-8 equivalent.
# .sp
# This feature is available in Postfix 3.0.
# .IP \fBmyhostname\fR
# Expands into the value of the \fBmyhostname\fR parameter.
# With "smtputf8_enable = yes", this replaces ACE labels
# (xn--mumble) with their UTF-8 equivalent.
# .sp
# This feature is available in Postfix 3.0.
# .PP
# The usage and specification of template message text is
# subject to the following restrictions:
# .IP \(bu
# The template message text is not sent in Postmaster copies
# of delivery status notifications.
# .IP \(bu
# If the template message text contains non-ASCII characters,
# Postfix requires that the \fBCharset:\fR template header
# is updated. Specify an appropriate superset of US-ASCII.
# A superset is needed because Postfix appends ASCII text
# after the message template when it sends a delivery status
# notification.
# SEE ALSO
# bounce(8), Postfix delivery status notifications
# postconf(5), configuration parameters
# LICENSE
# .ad
# .fi
# The Secure Mailer license must be distributed with this software.
# HISTORY
# .ad
# .fi
# The Postfix bounce template format was originally developed by
# Nicolas Riendeau.
# AUTHOR(S)
# Wietse Venema
# IBM T.J. Watson Research
# P.O. Box 704
# Yorktown Heights, NY 10598, USA
#
# Wietse Venema
# Google, Inc.
# 111 8th Avenue
# New York, NY 10011, USA
#--
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