原文地址：https://www.aolens.cn/?p=1018
1，Extmail概述
ExtMail Solution 是一个基于优秀开源软件的电子邮件系统解决方案，核心部件包括了Postfix、Amavisd-new、ClamAV、ExtMail、ExtMan、Courier系列软件。是一个功能相对比较齐全的免费电子邮件系统。
而其中Extmail 是一个以perl语言编写，面向大容量/ISP级应用，免费的高性能Webmail软件，主要包括ExtMail、Extman两个部分的程序套件。ExtMail套件用于提供从浏览器中登录、使用邮件系统的Web操作界面，而Extman套件用于提供从浏览器中管理邮件系统的Web操作界面。
2，Extmail工作原理
Extmail的核心部分是postfix，是一种web页面，可以创建账号，可以收发邮件。extman可以账号注册。账号存放在mysql里面。postfix发信件，dovecot收信件。利用outlook收信件（docecot）和发信件（postfix）都要通过mysql查询。发信件（postfix）要提取mysql账号信息要通过courier-authlib。是基于虚拟帐号的邮件系统。
配置准备：
修改主机名为mail.aolens.cn
在DNS上解析mail.aolens.cn
- @ MX mail.aolens.cn
- mail A ip地址
3,Extmail搭建
3.1 安装依赖
[[email protected] ~]# yum install httpd mysql mysql-server mysql-devel openssl-devel dovecot perl-DBD-MySQL tcl tcl-devel libart_lgpl libart_lgpl-devel libtool-ltdl libtool-ltdl-devel expect [[email protected] ~]# yum groupinstall "Development Libraries” “Development Tools" [email protected] ~]# service httpd start 正在启动 httpd：httpd: Could not reliably determine the server‘s fully qualified domain name, using node2.aolens.cn for ServerName [确定] [[email protected] ~]# service mysqld start 初始化 MySQL 数据库： Installing MySQL system tables... [确定] 正在启动 mysqld： [确定] [[email protected] ~]# mysqladmin password aolens #为数据库设置密码 3.2 安装postfix [[email protected] ~]# rpm -qa postfix postfix-2.6.6-2.2.el6_1.x86_64 [[email protected] ~]# rpm -e postfix --nodeps [[email protected] ~]# id postfix uid=89(postfix) gid=89(postfix) 组=89(postfix),12(mail) [[email protected] ~]# userdel postfix [[email protected] ~]# groupdel postfix [[email protected] ~]# grep postfix /etc/passwd [[email protected] ~]# rm -rf /var/spool/postfix [[email protected] ~]# groupadd -g 2525 postfix [[email protected] ~]# useradd -g postfix -u 2525 -s /sbin/nologin -M postfix [[email protected] ~]# groupdel postdrop [[email protected] ~]# groupadd -g 2526 postdrop [[email protected] ~]# useradd -g postdrop -u 2526 -s /sbin/nologin -M postdrop [[email protected] ~]# grep post* /etc/passwd postfix:x:2525:2525::/home/postfix:/sbin/nologin postdrop:x:2526:2526::/home/postdrop:/sbin/nologin
postfix版本：postfix-3.2-20160327
[[email protected] ~]# wget ftp://ftp.cuhk.edu.hk/pub/packages/mail-server/postfix/experimental/postfix-3.2-20160327.tar.gz [[email protected] ~/postfix-3.2-20160327]# yum install cyrus-sasl* SASL:Simple Authintication Secure Layer简单认证安全层，用来认证邮箱账号的 [[email protected] ~/postfix-3.2-20160327]# make makefiles ‘CCARGS=-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl -DUSE_TLS ‘ ‘AUXLIBS=-L/usr/lib64/mysql -lmysqlclient -lz -lm -L/usr/lib64/sasl2 -lsasl2 -lssl -lcrypto’ [[email protected] ~/postfix-3.2-20160327]# make && make install && echo ok 按照以下提示输入相关路径，省略表示采用默认值 install_root: [/] / tempdir: [/root/postfix-3.2-20160327] /tmp config_directory: [/etc/postfix] /etc/postfix command_directory: [/usr/sbin] /usr/sbin daemon_directory: [/usr/libexec/postfix] data_directory: [/var/lib/postfix] html_directory: [no] /var/www/postfix_html mail_owner: [postfix] mailq_path: [/usr/bin/mailq] manpage_directory: [/usr/local/man] queue_directory: [/var/spool/postfix] readme_directory: [no] sendmail_path: [/usr/sbin/sendmail] setgid_group: [postdrop] shlib_directory: [no] meta_directory: [/etc/postfix] [[email protected] ~/postfix-3.2-20160327]# newaliases newaliases: warning: smtputf8_enable is true, but EAI support is not compiled in postalias: warning: smtputf8_enable is true, but EAI support is not compiled in [[email protected] /media]# mkdir postfix2.6 [[email protected] /media]# cd postfix2.6/ [[email protected] /media/postfix2.6]# wget http://mirrors.sohu.com/centos/6.7/os/x86_64/Packages/postfix-2.6.6-6.el6_5.x86_64.rpm [[email protected] /media/postfix2.6]# rpm2cpio postfix-2.6.6-6.el6_5.x86_64.rpm |cpio -id 19862 块 [[email protected] /media/postfix2.6]# ls * postfix-2.6.6-6.el6_5.x86_64.rpm etc: pam.d postfix rc.d sasl2 usr: bin lib libexec sbin share var: lib spool
＃创建sysv脚本
[[email protected] /media/postfix2.6/etc/rc.d/init.d]# cp -p postfix /etc/init.d/
[[email protected] ~]# chown -R postfix /var/lib/postfix
[[email protected] ~]# service postfix start
启动 postfix： [确定]
[[email protected] ~]# ss -tnlp|grep 25
LISTEN 0 100 *:25 *:* users:(("master",55347,13))
[[email protected] ~]# chkconfig --add postfix
[[email protected] ~]# chkconfig postfix on
[[email protected] ~]# vim /etc/postfix/main.cf
#添加下列参数
myhostname = mail.aolens.cn
mydomain = aolens.cn
myorigin = aolens.cn #邮件地址伪装伪装mail.aolens.cn为aolens.cn
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain #所有目标邮件为以上的就是本机，不用中继了
mynetworks = 192.168.1.0/24,127.0.0.0/8
##这里注意一下，我192.168.1.0/24开始的时候写成192.168.1.129/24 导致rcpt to:.. 一直453错误。
使用以下命令验正postfix是否支持cyrus风格的sasl认证，如果您的输出为以下结果，则是支持的：
[[email protected] ~]# service saslauthd start 正在启动 saslauthd： [确定] [[email protected] ~]# postconf -a cyrus dovecot
postconf命令：配置postfix
- -d:显示默认的配置
- -n:显示修改的配置
- -m:显示所有所支持的查找表类型
- -a:显示支持的SASL客户端插件类型
- -e:PARMATER=VALUE:更改某参数配置信息，并保存至main.cf文件中
smtp状态码：
- 1XX：
- 2XX:正确信息
- 3XX：当前信息没有结束
- 4XX：暂时性错误
- 5XX：永久性错误
smtp：协议命令
- helo (smtp协议)
- ehlo (esmtp协议)
- mail from: 邮件发送人
- rcpt to: 邮件接收人
- date 邮件内容
- Subject： 邮件标题
- . 邮件结束符
alias：邮件别名
[email protected]:[email protected] 法网abc的其实会发到efg
使用newaliases来生成/etc/aliases.db
验证postfix是否安装OK
[[email protected] ~]# useradd test [[email protected] ~]# telnet localhost 25 Trying ::1... telnet: connect to address ::1: Connection refused Trying 127.0.0.1... Connected to localhost. Escape character is ‘^]‘. 220 Welcome to our mail.aolens.cn ESMTP,Warning: Version not Available! helo 501 Syntax: HELO hostname helo localhost 250 mail.aolens.cn mail from:[email protected] 250 2.1.0 Ok rcpt to:test 250 2.1.5 Ok data 354 End data with <CR><LF>.<CR><LF> Subject:aaa aaaaaaa . 250 2.0.0 Ok: queued as 2B78580CCB quit 221 2.0.0 Bye Connection closed by foreign host. [[email protected] ~]# vim /var/spool/mail/test From [email protected] Wed May 11 10:24:45 2016 Return-Path: <[email protected]> X-Original-To: test Delivered-To: [email protected] Received: from localhost (localhost [127.0.0.1]) by mail.aolens.cn (Postfix) with SMTP id 2B78580CCB for <test>; Wed, 11 May 2016 10:24:25 +0800 (CST) Subject:aaa Message-Id: <[email protected]> Date: Wed, 11 May 2016 10:24:25 +0800 (CST) From: [email protected] aaaaaaa
我们发现在邮件投递目录里对应的用户中有我们发送过来的邮件。这就说明发送成功了
时间： 2024-10-13 07:57:45