构建简单电子邮件系统
构建简单电子邮件系统
Postfix：提供邮件发送服务（SMTP）
Dovecot：提供邮件收取服务（POP3）
Foxmail：用于收发信的客户端工具
#配置好本地DNS服务器
#修改主机名
[root@mail ~]# vim /etc/sysconfig/network
[root@mail ~]# cat /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=mail.sxkj.com
#修改hosts文件
[root@mail ~]# vim /etc/hosts
[root@mail ~]# cat /etc/hosts
10.0.1.88 mail mail.sxkj.com
::1 mail mail.sxkj.com
[root@mail ~]# hostname mail.sxkj.com
#修改DNS配置文件
[root@mail postfix]# cp -a /var/named/163.com.zone /var/named/sxkj.com.zone [root@mail postfix]# vim /var/named/sxkj.com.zone [root@mail postfix]# cat /var/named/sxkj.com.zone $TTL 1D @ IN SOA mail.sxkj.com. root ( 3 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum @ IN NS mail.sxkj.com. @ IN A 10.0.1.88 www IN A 10.0.1.88 mail IN A 10.0.1.88 @ IN MX 5 mail.sxkj.com.
#重启DNS服务
[root@mail postfix]# service named restart
Stopping named: . [ OK ]
Starting named: [ OK ]
#安装Postfix
#停用sendmail服务，以避免冲突
[root@mail ~]# yum install postfix -y
[root@mail ~]# alternatives --config mta There is 1 program that provides 'mta'. Selection Command ----------------------------------------------- *+ 1 /usr/sbin/sendmail.postfix Enter to keep the current selection[+], or type selection number: 1
#重启postfix服务
[root@mail ~]# service postfix restart Shutting down postfix: [ OK ] Starting postfix: [ OK ]
#开机启动，查看25号端口是否开启
[root@mail ~]# chkconfig postfix on [root@mail ~]# netstat -ntpl | grep 25 tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 19481/master tcp 0 0 ::1:25 :::* LISTEN 19481/master
#修改配置文件main.cf
[root@mail ~]# cd /etc/postfix/ [root@mail postfix]# postconf -n >main.cf.new [root@mail postfix]# mv main.cf main.cf.old [root@mail postfix]# mv main.cf.new main.cf [root@mail postfix]# vim main.cf [root@mail postfix]# tail -5 main.cf
#修改以下选项
inet_protocols = all
inet_protocols = ipv4
#添加以下选项
myorigin = $mydomain
myhostname = mail.sxkj.com
mydomain = sxkj.com
home_mailbox = Maildir/
mydestination = $mydomain,$myhostname, localhost.$mydomain, localhost
mynetworks = 127.0.0.1
#添加本地用户
[root@mail ~]# useradd user1 [root@mail ~]# useradd user2 [root@mail ~]# passwd user1 [root@mail ~]# passwd user2
#telnet进行测试
[root@mail ~]# yum install telnet -y [root@mail ~]# telnet 10.0.1.88 25 Trying 10.0.1.88... Connected to 10.0.1.88. Escape character is '^]'. 220 mail.sxkj.com ESMTP Postfix mail from:user1 250 2.1.0 Ok rcpt to:user2 250 2.1.5 Ok data 354 End data with <CR><LF>.<CR><LF> subject:user1 to user2 1111111111111 . 250 2.0.0 Ok: queued as 74A69C1766 quit 221 2.0.0 Bye Connection closed by foreign host.
#查看是否收到成功收到邮件
[root@mail ~]# cat /home/user2/Maildir/new/1376117066.Vfd00I63167M572286.mail.sxkj.com Return-Path: <[email protected]> X-Original-To: user2 Delivered-To: [email protected] Received: from mail (mail [10.0.1.88]) by mail.sxkj.com (Postfix) with SMTP id 8E04DC4C1A for <user2>; Sat, 10 Aug 2013 14:43:55 +0800 (CST) subject:user1 to user2 Message-Id: <[email protected]> Date: Sat, 10 Aug 2013 14:43:55 +0800 (CST) From: [email protected] To: undisclosed-recipients:; 1111111111111
#yum安装dovecot软件
[root@mail ~]# yum install dovecot -y
#修改配置文件
[root@mail ~]# vim /etc/dovecot/dovecot.conf [root@mail ~]# tail -5 /etc/dovecot/dovecot.conf listen = * ssl_disable = yes protocols = pop3 imap disable_plaintext_auth = no mail_location = maildir:~/Maildir
#POP3收信测试：telnet localhost 110
[root@mail ~]# telnet mail 110
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 10.0.1.88...
Connected to mail.
Escape character is '^]'.
+OK Dovecot ready.
USER user1
+OK
PASS 123
+OK Logged in.
LIST
+OK 1 messages:
1 518
.
RETR 1
+OK 518 octets
Return-Path: <[email protected]>
X-Original-To: user1
Delivered-To: [email protected]
Received: by mail.sxkj.com (Postfix, from userid 0)
id 0C3E4C1766; Sat, 10 Aug 2013 14:37:14 +0800 (CST)
Date: Sat, 10 Aug 2013 14:37:14 +0800
To: [email protected]
Subject: root to user1
User-Agent: Heirloom mailx 12.4 7/29/08
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-Id: <[email protected]>
From: [email protected] (root)
222222222222222222222
.
#源码安装squirrelmail程序套件
[root@mail ~]# tar xf squirrelmail-1.4.18.tar.gz
[root@mail ~]# mv squirrelmail-1.4.18 /var/www/html/webmail
[root@mail ~]# cd /var/www/html/webmail/
[root@mail webmail]# tar xf zh_CN-1.4.18-20090526.tar.gz
[root@mail webmail]# chown apache:apache data/
[root@mail webmail]# cp config/config_default.php config/config.php
[root@mail webmail]# vim config/config.php
$squirrelmail_default_language = 'zh_CN';
$default_charset = 'zh_CN.UTF-8';
$domain = 'sxkj.com';
$data_dir = '/var/www/html/webmail/data/';
$attachment_dir = '/var/www/html/webmail/attach/';
[root@mail ~]# vim /etc/httpd/conf.d/vhost.conf
[root@mail ~]# tail -4 /etc/httpd/conf.d/vhost.conf
<VirtualHost 10.0.1.88:80>
DocumentRoot /var/local/squirrelmail/
ServerName mail.sxkj.com
</VirtualHost>
[root@mail squirrelmail]# service httpd restart
Stopping httpd: [ OK ]
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using mail.sxkj.com for ServerName
[ OK ]
[root@mail squirrelmail]# service mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ]