RedHat 5.4+ Postfix +Extmail实现基于虚拟用户的邮件系统(一)推

1、配置IP

[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

BOOTPROTO=static

IPADDR=172.16.1.254

NETMASK=255.255.255.0

:wq

[root@localhost ~]# service network restart

2、配置DNS文件

[root@mail ~]# vim /etc/resolv.conf

nameserver 172.16.1.254

3、配置hosts文件

[root@mail ~]# vim /etc/hosts

127.0.0.1 localhost.localdomain localhost

172.16.1.254 mail.postfix.org

4、配置主机名：mail.postfix.org

[root@localhost ~]# vim /etc/sysconfig/network

HOSTNAME=mail.postfix.org

:wq 保存

[root@localhost ~]# hostname mail.postfix.org

断开终端，再次连接，这样就需要重新启动系统：ctrl+d

[root@mail ~]# hostname

mail.postfix.org

5、SELinux关闭、LINUX关闭防火墙

SELinux关闭

1 永久方法需要重启服务器

修改/etc/selinux/config文件中设置SELINUX=disabled ，然后重启服务器。

2 临时方法设置系统参数

使用命令setenforce 0

LINUX关闭防火墙

1 重启后永久性生效：

开启：chkconfig iptables on

关闭：chkconfig iptables off

2 即时生效，重启后失效：

开启：service iptables start

关闭：service iptables stop

三、配置YUM(略)

参考方案：http://yanghuawu.blog.51cto.com/2638960/886129

挂载光盘：本次挂载目录：/mnt

[root@mail ~]# mount -i /dev/cdrom /mnt

四、安装bind(DNS)

[root@mail ~]# yum install bind bind-chroot caching-nameserver

[root@mail ~]# cd /var/named/chroot/etc/

[root@mail etc]# ll

total 32

-rw-r–r– 1 root root 405 Dec 18 09:17 localtime

-rw-r—– 1 root named 1230 Jul 30 2009 named.caching-nameserver.conf

-rw-r—– 1 root named 955 Jul 30 2009 named.rfc1912.zones

-rw-r—– 1 root named 113 Dec 18 14:30 rndc.key

[root@mail etc]# cp -p named.caching-nameserver.conf named.conf

[root@mail etc]# cp named.conf named.confbak #备份

[root@mail etc]# vim named.conf

修改：

行数

15 listen-on port 53 { any; };

27 allow-query { any; };

28 allow-query-cache { any; };

37 match-clients { any; };

38 match-destinations { any; };

:wq

[root@mail etc]# cd named.rfc1912.zones named.rfc1912.zonesbak #备份

[root@mail etc]# vim named.rfc1912.zones

复制修改以下内容：

21 zone localhost IN {

22 type master;

23 file localhost.zone

24 allow-update { none; };

25 };

修改如下：

27 zone postfix.org IN {

28 type master;

29 file postfix.org.zone

30 allow-update { none; };

31 };

:wq

[root@mail etc]# cd ../var/named/

[root@mail named]# pwd

/var/named/chroot/var/named

[root@mail named]# cp -p localhost.zone postfix.org.zone

[root@mail named]# cp postfix.org.zone postfix.org.zonebak #备份

[root@mail named]# vim postfix.org.zone

$TTL 86400

@ IN SOA ns.postfix.org. root (

42 ; serial (d. adams)

3H ; refresh

15M ; retry

1W ; expiry

1D ) ; minimum

IN NS ns.postfix.org.

ns IN A 172.16.1.254

mail IN A 172.16.1.254

pop3 IN CNAME mail

smtp IN CNAME mail

@ IN MX 10 mail

:wq

[root@mail named]# service named restart

[root@mail named]# chkconfig named on

[root@mail named]# rndc reload

server reload successful

[root@mail named]# dig -t mx postfix.org

; DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5 -t mx postfix.org

;; global options: printcmd

;; Got answer:

;; – HEADER – opcode: QUERY, status: NOERROR, id: 663

;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; QUESTION SECTION:

;postfix.org. IN MX

;; ANSWER SECTION:

postfix.org. 86400 IN MX 10 mail.postfix.org.

;; AUTHORITY SECTION:

postfix.org. 86400 IN NS ns.postfix.org.

;; ADDITIONAL SECTION:

mail.postfix.org. 86400 IN A 172.16.1.254

ns.postfix.org. 86400 IN A 172.16.1.254

;; Query time: 5 msec

;; SERVER: 172.16.1.254#53(172.16.1.254)

;; WHEN: Thu Dec 27 09:24:26 2012

;; MSG SIZE rcvd: 99

五、关闭sendmail,并不随机启动或者卸载

[root@mail named]# service sendmail status

sendmail (pid 2754) is running…

[root@mail named]# service sendmail stop

[root@mail named]# chkconfig sendmail off

六、安装所需依赖rpm包

yum install -y httpd php php-mysql 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 db* cyrus*

七、检查以上开发所有用到的RPM包组是否启动安装

[root@mail named]# yum grouplist

Development Libraries 开发言库

Development Tools 开发工具

Legacy Software Development 传统软件开发

X Software Development 图形开发组

方法安装：

[root@mail named]# yum groupinstall FTP Server

八、启动mysql数据库，并给mysql的root用户设置密码

[root@mail named]# service mysqld start

[root@mail named]# chkconfig mysqld on

[root@mail named]# mysqladmin -u root password ‘redhat’ #为mysql的用户设置密码：redhat

或也可以以下操作：

———————————授权本地用户

[root@mail named]# mysql

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.0.77 Source distribution

Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.

mysql set password for root@’localhost’=password(‘redhat’);