Postfix postfix configuration example for CentOS Linux 7

Get the default configuration file postfix for Postfix, optimized for CentOS Linux 7. 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/rc.d/init.d/postfix.

For more configurations and setup guides, visit our related files section to further customize your system.

    #!/bin/bash
#
# postfix      Postfix Mail Transfer Agent
#
# chkconfig: - 80 30
# description: Postfix is a Mail Transport Agent, which is the program \
#              that moves mail from one machine to another.
# processname: master
# pidfile: /var/spool/postfix/pid/master.pid
# config: /etc/postfix/main.cf
# config: /etc/postfix/master.cf
#
# Based on startup script from Simon J Mudd <sjmudd@pobox.com>
# 25/02/99: Mostly s/sendmail/postfix/g by John A. Martin <jam@jamux.com>
# 23/11/00: Changes & suggestions by Ajay Ramaswamy <ajayr@bigfoot.com>
# 20/01/01: Changes to fall in line with RedHat 7.0 style
# 23/02/01: Fix a few untidy problems with help from Daniel Roesen.

### BEGIN INIT INFO
# Provides: postfix $mail-transfer-agent
# Required-Start: $local_fs $network $remote_fs
# Required-Stop: $local_fs $network $remote_fs
# Short-Description: start and stop postfix
# Description: Postfix is a Mail Transport Agent, which is the program that 
#              moves mail from one machine to another.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

RETVAL=0
prog="postfix"
lockfile=/var/lock/subsys/$prog
pidfile=/var/spool/postfix/pid/master.pid

ALIASESDB_STAMP=/var/lib/misc/postfix.aliasesdb-stamp

# Script to update chroot environment
CHROOT_UPDATE=/etc/postfix/chroot-update

status -p $pidfile -l $(basename $lockfile) master >/dev/null 2>&1
running=$?

conf_check() {
    [ -x /usr/sbin/postfix ] || exit 5
    [ -d /etc/postfix ] || exit 6
    [ -d /var/spool/postfix ] || exit 5
}

make_aliasesdb() {
	if [ "$(/usr/sbin/postconf -h alias_database)" == "hash:/etc/aliases" ]
	then
		# /etc/aliases.db may be used by other MTA, make sure nothing
		# has touched it since our last newaliases call
		[ /etc/aliases -nt /etc/aliases.db ] ||
			[ "$ALIASESDB_STAMP" -nt /etc/aliases.db ] ||
			[ "$ALIASESDB_STAMP" -ot /etc/aliases.db ] || return
		/usr/bin/newaliases
		touch -r /etc/aliases.db "$ALIASESDB_STAMP"
	else
		/usr/bin/newaliases
	fi
}

start() {
	[ "$EUID" != "0" ] && exit 4
	# Check that networking is up.
	[ ${NETWORKING} = "no" ] && exit 1
	conf_check
	# Start daemons.
	echo -n $"Starting postfix: "
	make_aliasesdb >/dev/null 2>&1
	[ -x $CHROOT_UPDATE ] && $CHROOT_UPDATE
	/usr/sbin/postfix start 2>/dev/null 1>&2 && success || failure $"$prog start"
	RETVAL=$?
	[ $RETVAL -eq 0 ] && touch $lockfile
        echo
	return $RETVAL
}

stop() {
	[ "$EUID" != "0" ] && exit 4
	conf_check
        # Stop daemons.
	echo -n $"Shutting down postfix: "
	/usr/sbin/postfix stop 2>/dev/null 1>&2 && success || failure $"$prog stop"
	RETVAL=$?
	[ $RETVAL -eq 0 ] && rm -f $lockfile $pidfile
	echo
	return $RETVAL
}

reload() {
	conf_check
	echo -n $"Reloading postfix: "
	[ -x $CHROOT_UPDATE ] && $CHROOT_UPDATE
	/usr/sbin/postfix reload 2>/dev/null 1>&2 && success || failure $"$prog reload"
	RETVAL=$?
	echo
	return $RETVAL
}

abort() {
	conf_check
	/usr/sbin/postfix abort 2>/dev/null 1>&2 && success || failure $"$prog abort"
	return $?
}

flush() {
	conf_check
	/usr/sbin/postfix flush 2>/dev/null 1>&2 && success || failure $"$prog flush"
	return $?
}

check() {
	conf_check
	/usr/sbin/postfix check 2>/dev/null 1>&2 && success || failure $"$prog check"
	return $?
}

# See how we were called.
case "$1" in
  start)
	[ $running -eq 0 ] && exit 0
	start
	;;
  stop)
	[ $running -eq 0 ] || exit 0
	stop
	;;
  restart|force-reload)
	stop
	start
	;;
  reload)
	[ $running -eq 0 ] || exit 7
	reload
	;;
  abort)
	abort
	;;
  flush)
	flush
	;;
  check)
	check
	;;
  status)
  	status -p $pidfile -l $(basename $lockfile) master
	;;
  condrestart)
	[ $running -eq 0 ] || exit 0
	stop
	start
	;;
  *)
	echo $"Usage: $0 {start|stop|restart|reload|abort|flush|check|status|condrestart}"
	exit 2
esac

exit $?

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