Postfix是目前流行的一套邮件传输代理软件（MTA），其作者Wietst Venema最初开发这套软件时就对总体设计、扩展能力、可用性及系统安全等方面进行了充分的考虑。由于Postfix在稳定、效率、安全和可用性上的优势，使得很多大型的邮件服务提供商都从原有的MTA软件向Postfix过度，而新仅诞生的邮件产品也大多采用了Postfix。网易、Tom和新浪都将原有的Qmail更换为Postfix，可见Postfix在大规模邮件系统中有比较普遍的应用，当然，Postfix也完全适用设计中小型的邮件系统，因为Postfix在保证了效率、安全、扩展等方面优势的同时，还具有配置简单的特点。[比较老的数据了]

碎语：

又开始捣腾我比较喜欢的邮件系统了，本文为后面的邮件系统做铺垫，后面在来关联文章树，本文LNMP环境基于LNMP一键安装，请自行通过博客搜索功能搜索该关键词

[root@ipython ~]# service postfix stopShutting down postfix:                                     [  OK  ][root@ipython ~]# rpm -e --nodeps postfix

[root@ipython ~]# yum install db4-devel[root@ipython ~]# tar zxf postfix-2.12-20140801.tar.gz [root@ipython ~]# cd postfix-2.12-20140801####直接编译Makefiles####  ###AUX = 扩展功能[就这理解着吧] -lz = 压缩工具 -lm = 编码支持 ########lssl = openssl加密支持  lcrypto = crypto库 #######如果你参考了本文，请不要看别的文章，并且最好使用我打包好的免安装LNMP或一键安装LNMP做完一次完整的测试后，再尝试跟着你自己的感觉走哦######当然，如果你仍采用了自己的思路并参考了本文，那么请修改下面的依赖文件的路径，欢迎提问###[root@ipython postfix-2.12-20140801]# make makefiles CCARGS=‘-DHAS_MYSQL -I/software/mysql/include/mysql -DUSE_SASL_AUTH  -DDEF_SERVER_SASL_TYPE=\"dovecot\" -DUSE_TLS -I/software/openssl/include‘ AUXLIBS=‘-L/software/mysql/lib/mysql/ -lmysqlclient -lz -lm -L/software/openssl/lib/ -lssl -lcrypto‘[root@ipython postfix-2.12-20140801]# make ###给权限哦###[root@ipython postfix-2.12-20140801]# chmod a+x postfix-install [root@ipython postfix-2.12-20140801]# ./postfix-install -non-interactive install_root=/ tempdir=/tmp config_directory=/etc/postfix command_directory=/usr/sbin/ daemon_directory=/software/postfix data_directory=/var/lib/postfix html_directory=no mail_owner=postfix mailq_path=/usr/bin/mailq manpage_directory=/usr/local/man newaliases_path=/usr/bin/newaliases queue_directory=/var/spool/postfix readme_directory=no sendmail_path=/usr/sbin/sendmail setgia_group=postdrop

###postfix 启动脚本可以参考 blfs-bootscripts 包，依赖redhat-lsb，由于太大，这里放弃###---手动建立------------------------/etc/init.d/postfix---------------------------#!/bin/bash## postfix      Postfix Mail Transfer Agent## chkconfig: 2345 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 MTA# Required-Start: $local_fs $network $remote_fs# Required-Stop: $local_fs $network $remote_fs# Default-Start: 2 3 4 5# Default-Stop: 0 1 6# Short-Description: start and stop postfix# Description: Postfix is a Mail Transport Agent, which is the program that #              moves mail from one machine to another.### END INIT INFO# Source function library.. /etc/rc.d/init.d/functions# Source networking configuration.. /etc/sysconfig/networkRETVAL=0prog="postfix"lockfile=/var/lock/subsys/$progpidfile=/var/spool/postfix/pid/master.pidALIASESDB_STAMP=/var/lib/misc/postfix.aliasesdb-stamp# Script to update chroot environmentCHROOT_UPDATE=/etc/postfix/chroot-updatestatus -p $pidfile -l $(basename $lockfile) -b /usr/libexec/postfix/master master >/dev/null 2>&1running=$?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/null1>&2&& success || failure $"$prog reload"	RETVAL=$?	echo	return $RETVAL}abort(){	conf_check	/usr/sbin/postfix abort 2>/dev/null1>&2&& success || failure $"$prog abort"return $?}flush(){	conf_check	/usr/sbin/postfix flush 2>/dev/null1>&2&& success || failure $"$prog flush"return $?}check(){	conf_check	/usr/sbin/postfix check 2>/dev/null1>&2&& success || failure $"$prog check"return $?}# See how we were called.case"$1"in  start)[ $running -eq 0]&&exit0	start	;;  stop)[ $running -eq 0]||exit0	stop	;;  restart|force-reload)	stop	start	;;  reload)[ $running -eq 0]||exit7	reload	;;  abort)	abort	;;  flush)	flush	;;  check)	check	;;  status)	status -p $pidfile -l $(basename $lockfile)-b /usr/libexec/postfix/master master	;;  condrestart)[ $running -eq 0]||exit0	stop	start	;;*)	echo $"Usage: $0 {start|stop|restart|reload|abort|flush|check|status|condrestart}"exit2esacexit $?###################################点到为止###################################[root@ipython postfix-2.12-20140801]# chmod 755/etc/init.d/postfix [root@ipython postfix-2.12-20140801]# service postfix startStarting postfix:[  OK  ]

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