CentOS配置sendmail服务器命令详解

[root@localhost ~]# rpm -q sendmail

package sendmail is not installed

[root@localhost ~]# mount /dev/cdrom /mnt

mount: block device /dev/cdrom is write-protected, mounting read-only

[root@localhost ~]# cd /mnt/CentOS

[root@localhost CentOS]# ls -l sendmail*

-rw-rw-r-- 1 500 500 646709 2007-11-19 sendmail-8.13.8-2.el5.i386.rpm #sendmail服务器程序

-rw-rw-r-- 1 500 500 318671 2007-11-19 sendmail-cf-8.13.8-2.el5.i386.rpm #与sendmail服务器相关的一系列配置文件和程序

-rw-rw-r-- 1 500 500 131633 2007-11-19 sendmail-devel-8.13.8-2.el5.i386.rpm #sendmail的开发库

-rw-rw-r-- 1 500 500 668959 2007-11-19 sendmail-doc-8.13.8-2.el5.i386.rpm #sendmail服务器的文档

[root@localhost CentOS]# rpm -ivh sendmail-8.13.8-2.el5.i386.rpm

warning: sendmail-8.13.8-2.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ########################################### [100%]

1:sendmail ########################################### [100%]

[root@localhost CentOS]# rpm -ivh sendmail-cf-8.13.8-2.el5.i386.rpm

warning: sendmail-cf-8.13.8-2.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ########################################### [100%]

1:sendmail-cf ########################################### [100%]

安装Dovecot 软件包(POP3 和IMAP)

到这里sendmail 服务器基本配置完成后,Mail Server 就可以完成邮件发送工作，如果需要使用

POP3 和IMAP 协议接收邮件还需要安装dovecot 软件包。在rhel5 里dovecot 整合了IMAP。

安装dovecot 软件包要解决其依赖性，安装perl-DBI-1.52-2.el5.i386.rpm、mysql-5.0.77-3.el5.i386.rpm和

dovecot-1.0.7-7.el5.i386.rpm

[root@localhost CentOS]# rpm -ivh perl-DBI-1.52-2.el5.i386.rpm

warning: perl-DBI-1.52-2.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ########################################### [100%]

1:perl-DBI ########################################### [100%]

[root@localhost CentOS]# rpm -ivh mysql-5.0.77-3.el5.i386.rpm

warning: mysql-5.0.77-3.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ########################################### [100%]

1:mysql ########################################### [100%]

[root@localhost CentOS]# rpm -ivh dovecot-1.0.7-7.el5.i386.rpm

warning: dovecot-1.0.7-7.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

Preparing... ########################################### [100%]

1:dovecot ########################################### [100%]

启动Sendmail 服务

service sendmail restart 和service dovecot restart 命令启动sendmail 和dovecot 服务,

[root@localhost CentOS]# service sendmail restart

测试端口

使用netstat 命令测试是否开启SMTP 的25 端口、POP3 的110 端口及IMAP 的143 端口。

[root@localhost CentOS]# netstat -ntla

Active Internet connections (servers and established)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp 0 0 :::110 :::* LISTEN

tcp 0 0 :::143 :::* LISTEN

tcp 0 0 :::22 :::* LISTEN

验证Sendmail 的SMTP 认证功能

telnet localhost 25 后输入ehlo localhost 验证Sendmail 的SMTP 认证功能

[root@localhost CentOS]# telnet localhost 25

Trying 127.0.0.1...

Connected to localhost.localdomain (127.0.0.1).

Escape character is '^]'.

220 localhost.localdomain ESMTP Sendmail 8.13.8/8.13.8; Thu, 6 Jan 2011 11:06:19 +0800

ehlo localhost

250-localhost.localdomain Hello localhost.localdomain [127.0.0.1], pleased to meet you

250-ENHANCEDSTATUSCODES

250-PIPELINING

250-8BITMIME

250-SIZE

250-DSN

250-ETRN

250-AUTH DIGEST-MD5 CRAM-MD5

250-DELIVERBY

250 HELP

quit

221 2.0.0 localhost.localdomain closing connection

Connection closed by foreign host.telnet localhost 110

[root@localhost CentOS]# telnet localhost 110

Trying 127.0.0.1...

Connected to localhost.localdomain (127.0.0.1).

Escape character is '^]'.

+OK Dovecot ready.

quit

+OK Logging out

Connection closed by foreign host.在WINDOWS系统下telnet 10.10.10.160 25

telnet 10.10.10.160 110

建立sendmail服务器用户：

[root@localhost CentOS]# useradd sdbaby

[root@localhost CentOS]# passwd sdbaby

Changing password for user sdbaby.

New UNIX password:

BAD PASSWORD: it is based on a dictionary word

Retype new UNIX password:

passwd: all authentication tokens updated successfully.

[root@localhost CentOS]# useradd sendmail

[root@localhost CentOS]# passwd sendmail

Changing password for user sendmail.

New UNIX password:

BAD PASSWORD: it is based on a dictionary word

Retype new UNIX password:

passwd: all authentication tokens updated successfully.

[root@localhost CentOS]#