Get the default configuration file post-install for Postfix, optimized for Debian GNU/Linux 8 (jessie). This example configuration ensures optimal compatibility and performance for Postfix, making it easy to set up and adjust to meet your needs.
Find and download the configuration file here: /etc/postfix/post-install.
For more configurations and setup guides, visit our related files section to further customize your system.
#!/bin/sh
# To view the formatted manual page of this file, type:
# POSTFIXSOURCE/mantools/srctoman - post-install | nroff -man
#++
# NAME
# post-install
# SUMMARY
# Postfix post-installation script
# SYNOPSIS
# postfix post-install [name=value] command ...
# DESCRIPTION
# The post-install script performs the finishing touch of a Postfix
# installation, after the executable programs and configuration
# files are installed. Usage is one of the following:
# .IP o
# While installing Postfix from source code on the local machine, the
# script is run by the postfix-install script to update selected file
# or directory permissions and to update Postfix configuration files.
# .IP o
# While installing Postfix from a pre-built package, the script is run
# by the package management procedure to set all file or directory
# permissions and to update Postfix configuration files.
# .IP o
# The script can be used to change installation parameter settings such
# as mail_owner or setgid_group after Postfix is already installed.
# .IP o
# The script can be used to upgrade configuration files and to upgrade
# file/directory permissions of a secondary Postfix instance.
# .IP o
# At Postfix start-up time, the script is run from "postfix check" to
# create missing queue directories.
# .PP
# The post-install script is controlled by installation parameters.
# Specific parameters are described at the end of this document.
# All installation parameters must be specified ahead of time via
# one of the methods described below.
#
# Arguments
# .IP create-missing
# Create missing queue directories with ownerships and permissions
# according to the contents of $daemon_directory/postfix-files
# and optionally in $daemon_directory/postfix-files.d/*, using
# the mail_owner and setgid_group parameter settings from the
# command line, process environment or from the installed
# main.cf file.
#
# This is required at Postfix start-up time.
# .IP set-permissions
# Set all file/directory ownerships and permissions according to the
# contents of $daemon_directory/postfix-files and optionally
# in $daemon_directory/postfix-files.d/*, using the mail_owner
# and setgid_group parameter settings from the command line,
# process environment or from the installed main.cf file.
# Implies create-missing.
#
# This is required when installing Postfix from a pre-built package,
# or when changing the mail_owner or setgid_group installation parameter
# settings after Postfix is already installed.
# .IP upgrade-permissions
# Update ownership and permission of existing files/directories as
# specified in $daemon_directory/postfix-files and optionally
# in $daemon_directory/postfix-files.d/*, using the mail_owner
# and setgid_group parameter settings from the command line,
# process environment or from the installed main.cf file.
# Implies create-missing.
#
# This is required when upgrading an existing Postfix instance.
# .IP upgrade-configuration
# Edit the installed main.cf and master.cf files, in order to account
# for missing services and to fix deprecated parameter settings.
#
# This is required when upgrading an existing Postfix instance.
# .IP upgrade-source
# Short-hand for: upgrade-permissions upgrade-configuration.
#
# This is recommended when upgrading Postfix from source code.
# .IP upgrade-package
# Short-hand for: set-permissions upgrade-configuration.
#
# This is recommended when upgrading Postfix from a pre-built package.
# .IP first-install-reminder
# Remind the user that they still need to configure main.cf and the
# aliases file, and that newaliases still needs to be run.
#
# This is recommended when Postfix is installed for the first time.
# MULTIPLE POSTFIX INSTANCES
# .ad
# .fi
# Multiple Postfix instances on the same machine can share command and
# daemon program files but must have separate configuration and queue
# directories.
#
# To create a secondary Postfix installation on the same machine,
# copy the configuration files from the primary Postfix instance to
# a secondary configuration directory and execute:
#
# postfix post-install config_directory=secondary-config-directory \e
# .in +4
# queue_directory=secondary-queue-directory \e
# .br
# create-missing
# .PP
# This creates secondary Postfix queue directories, sets their access
# permissions, and saves the specified installation parameters to the
# secondary main.cf file.
#
# Be sure to list the secondary configuration directory in the
# alternate_config_directories parameter in the primary main.cf file.
#
# To upgrade a secondary Postfix installation on the same machine,
# execute:
#
# postfix post-install config_directory=secondary-config-directory \e
# .in +4
# upgrade-permissions upgrade-configuration
# INSTALLATION PARAMETER INPUT METHODS
# .ad
# .fi
# Parameter settings can be specified through a variety of
# mechanisms. In order of decreasing precedence these are:
# .IP "command line"
# Parameter settings can be given as name=value arguments on
# the post-install command line. These have the highest precedence.
# Settings that override the installed main.cf file are saved.
# .IP "process environment"
# Parameter settings can be given as name=value environment
# variables.
# Settings that override the installed main.cf file are saved.
# .IP "installed configuration files"
# If a parameter is not specified via the command line or via the
# process environment, post-install will attempt to extract its
# value from the already installed Postfix main.cf configuration file.
# These settings have the lowest precedence.
# INSTALLATION PARAMETER DESCRIPTION
# .ad
# .fi
# The description of installation parameters is as follows:
# .IP config_directory
# The directory for Postfix configuration files.
# .IP daemon_directory
# The directory for Postfix daemon programs. This directory
# should not be in the command search path of any users.
# .IP command_directory
# The directory for Postfix administrative commands. This
# directory should be in the command search path of adminstrative users.
# .IP queue_directory
# The directory for Postfix queues.
# .IP data_directory
# The directory for Postfix writable data files (caches, etc.).
# .IP sendmail_path
# The full pathname for the Postfix sendmail command.
# This is the Sendmail-compatible mail posting interface.
# .IP newaliases_path
# The full pathname for the Postfix newaliases command.
# This is the Sendmail-compatible command to build alias databases
# for the Postfix local delivery agent.
# .IP mailq_path
# The full pathname for the Postfix mailq command.
# This is the Sendmail-compatible command to list the mail queue.
# .IP mail_owner
# The owner of the Postfix queue. Its numerical user ID and group ID
# must not be used by any other accounts on the system.
# .IP setgid_group
# The group for mail submission and for queue management commands.
# Its numerical group ID must not be used by any other accounts on the
# system, not even by the mail_owner account.
# .IP html_directory
# The directory for the Postfix HTML files.
# .IP manpage_directory
# The directory for the Postfix on-line manual pages.
# .IP sample_directory
# The directory for the Postfix sample configuration files.
# This feature is obsolete as of Postfix 2.1.
# .IP readme_directory
# The directory for the Postfix README files.
# SEE ALSO
# postfix-install(1) Postfix primary installation script.
# FILES
# $config_directory/main.cf, Postfix installation parameters.
# $daemon_directory/postfix-files, installation control file.
# $daemon_directory/postfix-files.d/*, optional control files.
# $config_directory/install.cf, obsolete configuration file.
# LICENSE
# .ad
# .fi
# The Secure Mailer license must be distributed with this software.
# AUTHOR(S)
# Wietse Venema
# IBM T.J. Watson Research
# P.O. Box 704
# Yorktown Heights, NY 10598, USA
#--
umask 022
PATH=/bin:/usr/bin:/usr/sbin:/usr/etc:/sbin:/etc:/usr/contrib/bin:/usr/gnu/bin:/usr/ucb:/usr/bsd
SHELL=/bin/sh
IFS="
"
BACKUP_IFS="$IFS"
debug=:
#debug=echo
MOST_PARAMETERS="command_directory daemon_directory data_directory
html_directory mail_owner mailq_path manpage_directory
newaliases_path queue_directory readme_directory sample_directory
sendmail_path setgid_group"
NON_SHARED="config_directory queue_directory data_directory"
USAGE="Usage: $0 [name=value] command
create-missing Create missing queue directories.
upgrade-source When installing or upgrading from source code.
upgrade-package When installing or upgrading from pre-built package.
first-install-reminder Remind of mandatory first-time configuration steps.
name=value Specify an installation parameter".
# Process command-line options and parameter settings. Work around
# brain damaged shells. "IFS=value command" should not make the
# IFS=value setting permanent. But some broken standard allows it.
create=; set_perms=; upgrade_perms=; upgrade_conf=; first_install_reminder=
obsolete=; keep_list=;
for arg
do
case $arg in
*=*) IFS= eval $arg; IFS="$BACKUP_IFS";;
create-missing) create=1;;
set-perm*) create=1; set_perms=1;;
upgrade-perm*) create=1; upgrade_perms=1;;
upgrade-conf*) upgrade_conf=1;;
upgrade-source) create=1; upgrade_conf=1; upgrade_perms=1;;
upgrade-package) create=1; upgrade_conf=1; set_perms=1;;
first-install*) first_install_reminder=1;;
*) echo "$0: Error: $USAGE" 1>&2; exit 1;;
esac
shift
done
# Sanity checks.
test -n "$create$upgrade_conf$first_install_reminder" || {
echo "$0: Error: $USAGE" 1>&2
exit 1
}
# Bootstrapping problem.
if [ -n "$command_directory" ]
then
POSTCONF="$command_directory/postconf"
else
POSTCONF="postconf"
fi
$POSTCONF -d mail_version >/dev/null 2>/dev/null || {
echo $0: Error: no $POSTCONF command found. 1>&2
echo Re-run this command as $0 command_directory=/some/where. 1>&2
exit 1
}
# Also used to require license etc. files only in the default instance.
def_config_directory=`$POSTCONF -d -h config_directory` || exit 1
test -n "$config_directory" ||
config_directory="$def_config_directory"
test -d "$config_directory" || {
echo $0: Error: $config_directory is not a directory. 1>&2
exit 1
}
# If this is a secondary instance, don't touch shared files.
# XXX Solaris does not have "test -e".
instances=`test ! -f $def_config_directory/main.cf ||
$POSTCONF -c $def_config_directory -h multi_instance_directories |
sed 's/,/ /'` || exit 1
update_shared_files=1
for name in $instances
do
case "$name" in
"$def_config_directory") ;;
"$config_directory") update_shared_files=; break;;
esac
done
test -f $daemon_directory/postfix-files || {
echo $0: Error: $daemon_directory/postfix-files is not a file. 1>&2
exit 1
}
# SunOS5 fmt(1) truncates lines > 1000 characters.
fake_fmt() {
sed '
:top
/^\( *\)\([^ ][^ ]*\) */{
s//\1\2\
\1/
P
D
b top
}
' | fmt
}
case `uname -s` in
HP-UX*) FMT=cat;;
SunOS*) FMT=fake_fmt;;
*) FMT=fmt;;
esac
# If a parameter is not set via the command line or environment,
# try to use settings from installed configuration files.
# Extract parameter settings from the obsolete install.cf file, as
# a transitional aid.
grep setgid_group $config_directory/main.cf >/dev/null 2>&1 || {
test -f $config_directory/install.cf && {
for name in sendmail_path newaliases_path mailq_path setgid manpages
do
eval junk=\$$name
case "$junk" in
"") eval unset $name;;
esac
eval : \${$name="\`. $config_directory/install.cf; echo \$$name\`"} \
|| exit 1
done
: ${setgid_group=$setgid}
: ${manpage_directory=$manpages}
}
}
# Extract parameter settings from the installed main.cf file.
test -f $config_directory/main.cf && {
for name in $MOST_PARAMETERS
do
eval junk=\$$name
case "$junk" in
"") eval unset $name;;
esac
eval : \${$name=\`$POSTCONF -c $config_directory -h $name\`} || exit 1
done
}
# Sanity checks
case $manpage_directory in
no) echo $0: Error: manpage_directory no longer accepts \"no\" values. 1>&2
echo Try again with \"$0 manpage_directory=/pathname ...\". 1>&2; exit 1;;
esac
case $setgid_group in
no) echo $0: Error: setgid_group no longer accepts \"no\" values. 1>&2
echo Try again with \"$0 setgid_group=groupname ...\" 1>&2; exit 1;;
esac
for path in "$daemon_directory" "$command_directory" "$queue_directory" \
"$sendmail_path" "$newaliases_path" "$mailq_path" "$manpage_directory"
do
case "$path" in
/*) ;;
*) echo $0: Error: \"$path\" should be an absolute path name. 1>&2; exit 1;;
esac
done
for path in "$html_directory" "$readme_directory"
do
case "$path" in
/*) ;;
no) ;;
*) echo $0: Error: \"$path\" should be \"no\" or an absolute path name. 1>&2; exit 1;;
esac
done
# Find out what parameters were not specified via command line,
# via environment, or via installed configuration files.
missing=
for name in $MOST_PARAMETERS
do
eval test -n \"\$$name\" || missing="$missing $name"
done
# All parameters must be specified at this point.
test -n "$non_interactive" -a -n "$missing" && {
cat <<EOF | ${FMT} 1>&2
$0: Error: some required installation parameters are not defined.
- Either the parameters need to be given in the $config_directory/main.cf
file from a recent Postfix installation,
- Or the parameters need to be specified through the process
environment.
- Or the parameters need to be specified as name=value arguments
on the $0 command line,
The following parameters were missing:
$missing
EOF
exit 1
}
POSTCONF="$command_directory/postconf"
# Save settings, allowing command line/environment override.
override=
for name in $MOST_PARAMETERS
do
eval test \"\$$name\" = \"`$POSTCONF -c $config_directory -h $name`\" || {
override=1
break
}
done
test -n "$override" && {
$POSTCONF -c $config_directory -e \
"daemon_directory = $daemon_directory" \
"command_directory = $command_directory" \
"queue_directory = $queue_directory" \
"data_directory = $data_directory" \
"mail_owner = $mail_owner" \
"setgid_group = $setgid_group" \
"sendmail_path = $sendmail_path" \
"mailq_path = $mailq_path" \
"newaliases_path = $newaliases_path" \
"html_directory = $html_directory" \
"manpage_directory = $manpage_directory" \
"sample_directory = $sample_directory" \
"readme_directory = $readme_directory" \
|| exit 1
}
# Use file/directory status information in $daemon_directory/postfix-files.
test -n "$create" && {
postfix_files_d=$daemon_directory/postfix-files.d
for postfix_file in $daemon_directory/postfix-files \
`test -d $postfix_files_d && { find $postfix_files_d -type f | sort; }`
do
exec <$postfix_file || exit 1
while IFS=: read path type owner group mode flags junk
do
IFS="$BACKUP_IFS"
set_permission=
# Skip comments. Skip shared files, if updating a secondary instance.
case $path in
[$]*) case "$update_shared_files" in
1) $debug keep non-shared or shared $path;;
*) non_shared=
for name in $NON_SHARED
do
case $path in
"\$$name"*) non_shared=1; break;;
esac
done
case "$non_shared" in
1) $debug keep non-shared $path;;
*) $debug skip shared $path; continue;;
esac;;
esac;;
*) continue;;
esac
# Skip hard links and symbolic links.
case $type in
[hl]) continue;;
[df]) ;;
*) echo unknown type $type for $path in $postfix_file 1>&2; exit 1;;
esac
# Expand $name, and canonicalize null fields.
for name in path owner group flags
do
eval junk=\${$name}
case $junk in
[$]*) eval $name=$junk;;
-) eval $name=;;
*) ;;
esac
done
# Skip uninstalled files.
case $path in
no|no/*) continue;;
esac
# Pick up the flags.
case $flags in *u*) upgrade_flag=1;; *) upgrade_flag=;; esac
case $flags in *c*) create_flag=1;; *) create_flag=;; esac
case $flags in *r*) recursive="-R";; *) recursive=;; esac
case $flags in *o*) obsolete_flag=1;; *) obsolete_flag=;; esac
case $flags in *[1i]*) test ! -r "$path" -a "$config_directory" != \
"$def_config_directory" && continue;; esac
# Flag obsolete objects. XXX Solaris 2..9 does not have "test -e".
if [ -n "$obsolete_flag" ]
then
test -r $path -a "$type" != "d" && obsolete="$obsolete $path"
continue;
else
keep_list="$keep_list $path"
fi
# Create missing directories with proper owner/group/mode settings.
if [ -n "$create" -a "$type" = "d" -a -n "$create_flag" -a ! -d "$path" ]
then
mkdir $path || exit 1
set_permission=1
# Update all owner/group/mode settings.
elif [ -n "$set_perms" ]
then
set_permission=1
# Update obsolete owner/group/mode settings.
elif [ -n "$upgrade_perms" -a -n "$upgrade_flag" ]
then
set_permission=1
fi
test -n "$set_permission" && {
chown $recursive $owner $path || exit 1
test -z "$group" || chgrp $recursive $group $path || exit 1
# Don't "chmod -R"; queue file status is encoded in mode bits.
if [ "$type" = "d" -a -n "$recursive" ]
then
find $path -type d -exec chmod $mode "{}" ";"
else
chmod $mode $path
fi || exit 1
}
done
IFS="$BACKUP_IFS"
done
}
# Upgrade existing Postfix configuration files if necessary.
test -n "$upgrade_conf" && {
# Postfix 2.0.
# Add missing relay service to master.cf.
grep '^relay' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for relay service
cat >>$config_directory/master.cf <<EOF || exit 1
relay unix - - n - - smtp
EOF
}
# Postfix 1.1.
# Add missing flush service to master.cf.
grep '^flush.*flush' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for flush service
cat >>$config_directory/master.cf <<EOF || exit 1
flush unix - - n 1000? 0 flush
EOF
}
# Postfix 2.1.
# Add missing trace service to master.cf.
grep 'trace.*bounce' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for trace service
cat >>$config_directory/master.cf <<EOF || exit 1
trace unix - - n - 0 bounce
EOF
}
# Postfix 2.1.
# Add missing verify service to master.cf.
grep '^verify.*verify' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for verify service
cat >>$config_directory/master.cf <<EOF || exit 1
verify unix - - n - 1 verify
EOF
}
# Postfix 2.1.
# Fix verify service process limit.
grep '^verify.*[ ]0[ ]*verify' \
$config_directory/master.cf >/dev/null && {
echo Editing $config_directory/master.cf, setting verify process limit to 1
ed $config_directory/master.cf <<EOF || exit 1
/^verify.*[ ]0[ ]*verify/
s/\([ ]\)0\([ ]\)/\11\2/
p
w
q
EOF
}
# Postfix 1.1.
# Change privileged pickup service into unprivileged.
grep "^pickup[ ]*fifo[ ]*n[ ]*n" \
$config_directory/master.cf >/dev/null && {
echo Editing $config_directory/master.cf, making the pickup service unprivileged
ed $config_directory/master.cf <<EOF || exit 1
/^pickup[ ]*fifo[ ]*n[ ]*n/
s/\(n[ ]*\)n/\1-/
p
w
q
EOF
}
# Postfix 1.1.
# Change private cleanup and flush services into public.
for name in cleanup flush
do
grep "^$name[ ]*unix[ ]*[-y]" \
$config_directory/master.cf >/dev/null && {
echo Editing $config_directory/master.cf, making the $name service public
ed $config_directory/master.cf <<EOF || exit 1
/^$name[ ]*unix[ ]*[-y]/
s/[-y]/n/
p
w
q
EOF
}
done
# Postfix 2.2.
# File systems have improved since Postfix came out, and all we
# require now is that defer and deferred are hashed because those
# can contain lots of files.
found=`$POSTCONF -c $config_directory -h hash_queue_names`
missing=
(echo "$found" | grep defer >/dev/null) || missing="$missing defer"
(echo "$found" | grep deferred>/dev/null)|| missing="$missing deferred"
test -n "$missing" && {
echo fixing main.cf hash_queue_names for missing $missing
$POSTCONF -c $config_directory -e hash_queue_names="$found$missing" ||
exit 1
}
# Turn on safety nets for new features that could bounce mail that
# would be accepted by a previous Postfix version.
# [The "unknown_local_recipient_reject_code = 450" safety net,
# introduced with Postfix 2.0 and deleted after Postfix 2.3.]
# Postfix 2.0.
# Add missing proxymap service to master.cf.
grep '^proxymap.*proxymap' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for proxymap service
cat >>$config_directory/master.cf <<EOF || exit 1
proxymap unix - - n - - proxymap
EOF
}
# Postfix 2.1.
# Add missing anvil service to master.cf.
grep '^anvil.*anvil' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for anvil service
cat >>$config_directory/master.cf <<EOF || exit 1
anvil unix - - n - 1 anvil
EOF
}
# Postfix 2.2.
# Add missing scache service to master.cf.
grep '^scache.*scache' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for scache service
cat >>$config_directory/master.cf <<EOF || exit 1
scache unix - - n - 1 scache
EOF
}
# Postfix 2.2.
# Add missing discard service to master.cf.
grep '^discard.*discard' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for discard service
cat >>$config_directory/master.cf <<EOF || exit 1
discard unix - - n - - discard
EOF
}
# Postfix 2.2.
# Update the tlsmgr fifo->unix service.
grep "^tlsmgr[ ]*fifo[ ]" \
$config_directory/master.cf >/dev/null && {
echo Editing $config_directory/master.cf, updating the tlsmgr from fifo to unix service
ed $config_directory/master.cf <<EOF || exit 1
/^tlsmgr[ ]*fifo[ ]/
s/fifo/unix/
s/[0-9][0-9]*/&?/
p
w
q
EOF
}
# Postfix 2.2.
# Add missing tlsmgr service to master.cf.
grep '^tlsmgr.*tlsmgr' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for tlsmgr service
cat >>$config_directory/master.cf <<EOF || exit 1
tlsmgr unix - - n 1000? 1 tlsmgr
EOF
}
# Postfix 2.2.
# Add missing retry service to master.cf.
grep '^retry.*error' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for retry service
cat >>$config_directory/master.cf <<EOF || exit 1
retry unix - - n - - error
EOF
}
# Postfix 2.5.
# Add missing proxywrite service to master.cf.
grep '^proxywrite.*proxymap' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for proxywrite service
cat >>$config_directory/master.cf <<EOF || exit 1
proxywrite unix - - n - 1 proxymap
EOF
}
# Postfix 2.5.
# Fix a typo in the default master.cf proxywrite entry.
grep '^proxywrite.*-[ ]*proxymap' $config_directory/master.cf >/dev/null && {
echo Editing $config_directory/master.cf, setting proxywrite process limit to 1
ed $config_directory/master.cf <<EOF || exit 1
/^proxywrite.*-[ ]*proxymap/
s/-\([ ]*proxymap\)/1\1/
p
w
q
EOF
}
# Postfix 2.8.
# Add missing postscreen service to master.cf.
grep '^#*smtp.*postscreen' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for postscreen TCP service
cat >>$config_directory/master.cf <<EOF || exit 1
#smtp inet n - n - 1 postscreen
EOF
}
# Postfix 2.8.
# Add missing smtpd (unix-domain) service to master.cf.
grep '^#*smtpd.*smtpd' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for smtpd unix-domain service
cat >>$config_directory/master.cf <<EOF || exit 1
#smtpd pass - - n - - smtpd
EOF
}
# Postfix 2.8.
# Add temporary dnsblog (unix-domain) service to master.cf.
grep '^#*dnsblog.*dnsblog' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for dnsblog unix-domain service
cat >>$config_directory/master.cf <<EOF || exit 1
#dnsblog unix - - n - 0 dnsblog
EOF
}
# Postfix 2.8.
# Add tlsproxy (unix-domain) service to master.cf.
grep '^#*tlsproxy.*tlsproxy' $config_directory/master.cf >/dev/null || {
echo Editing $config_directory/master.cf, adding missing entry for tlsproxy unix-domain service
cat >>$config_directory/master.cf <<EOF || exit 1
#tlsproxy unix - - n - 0 tlsproxy
EOF
}
# Report (but do not remove) obsolete files.
test -n "$obsolete" && {
cat <<EOF | ${FMT}
Note: the following files or directories still exist but are
no longer part of Postfix:
$obsolete
EOF
}
# Postfix 2.9.
# Safety net for incompatible changes in IPv6 defaults.
# PLEASE DO NOT REMOVE THIS CODE. ITS PURPOSE IS TO AVOID AN
# UNEXPECTED DROP IN PERFORMANCE AFTER UPGRADING FROM POSTFIX
# BEFORE 2.9.
# This code assumes that the default is "inet_protocols = ipv4"
# when IPv6 support is not compiled in. See util/sys_defs.h.
test "`$POSTCONF -dh inet_protocols`" = "ipv4" ||
test -n "`$POSTCONF -c $config_directory -n inet_protocols`" || {
cat <<EOF | ${FMT}
COMPATIBILITY: editing $config_directory/main.cf, setting
inet_protocols=ipv4. Specify inet_protocols explicitly if you
want to enable IPv6.
In a future release IPv6 will be enabled by default.
EOF
$POSTCONF -c $config_directory inet_protocols=ipv4 || exit 1
}
# Disabled because unhelpful down-stream maintainers disable the safety net.
# # Postfix 2.10.
# # Safety net for incompatible changes due to the introduction
# # of the smtpd_relay_restrictions feature to separate the
# # mail relay policy from the spam blocking policy.
# # PLEASE DO NOT REMOVE THIS CODE. ITS PURPOSE IS TO PREVENT
# # INBOUND MAIL FROM UNEXPECTEDLY BOUNCING AFTER UPGRADING FROM
# # POSTFIX BEFORE 2.10.
# test -n "`$POSTCONF -c $config_directory -n smtpd_relay_restrictions`" || {
# cat <<EOF | ${FMT}
# COMPATIBILITY: editing $config_directory/main.cf, overriding
# smtpd_relay_restrictions to prevent inbound mail from
# unexpectedly bouncing.
# Specify an empty smtpd_relay_restrictions value to keep using
# smtpd_recipient_restrictions as before.
#EOF
# $POSTCONF -c $config_directory "smtpd_relay_restrictions = \
# permit_mynetworks permit_sasl_authenticated \
# defer_unauth_destination" || exit 1
# }
}
# A reminder if this is the first time Postfix is being installed.
test -n "$first_install_reminder" && {
ALIASES=`$POSTCONF -c $config_directory -h alias_database | sed 's/^[^:]*://'`
NEWALIASES_PATH=`$POSTCONF -c $config_directory -h newaliases_path`
cat <<EOF | ${FMT}
Warning: you still need to edit myorigin/mydestination/mynetworks
parameter settings in $config_directory/main.cf.
See also http://www.postfix.org/STANDARD_CONFIGURATION_README.html
for information about dialup sites or about sites inside a
firewalled network.
BTW: Check your $ALIASES file and be sure to set up aliases
that send mail for root and postmaster to a real person, then
run $NEWALIASES_PATH.
EOF
}
exit 0
Download the raw file with wget or curl
wget -O post-install.example https://exampleconfig.com/static/raw/postfix/debian8/etc/postfix/post-install
curl https://exampleconfig.com/static/raw/postfix/debian8/etc/postfix/post-install > post-install.example
Other config files you might find useful