分类： LINUX
2009-11-02 12:10:26
实验环境
1台DNS服务器，主机名为yoko
2个mail服务器，主机名为server1和server2，server1上有sina.com和yahoo.com
要实现多域，首先得在DNS中添加MX记录，使这几个域名都能够被解析
DNS
[root@yoko chroot]# vim etc/named.rfc1912.zones ###加上以下域####
zone "sina.com" IN {
type master;
file "sina.com.zone";
allow-update { none; };
};
zone "yahoo.com" IN {
type master;
file "yahoo.com.zone";
allow-update { none; };
};
zone "163.com" IN {
type master;
file "163.com.zone";
allow-update { none; };
};
zone "12.168.192.in-addr.arpa" IN {
type master;
file "sina.com.local";
allow-update { none; };
};
zone "20.168.192.in-addr.arpa" IN {
type master;
file "163.com.local";
allow-update { none; };
};
[root@yoko named]# vim sina.com.zone
$TTL 86400
@ IN SOA yoko root@sina.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS yoko.sina.com.
IN MX 5 server1.sina.com.
yoko IN A 192.168.12.1
server1 IN A 192.168.12.23
client1 IN A 192.168.12.2
[root@yoko named]# vim yahoo.com.zone
$TTL 86400
@ IN SOA yoko root@yahoo.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS yoko
IN MX 5 server1
yoko IN A 192.168.12.1
server1 IN A 192.168.12.23
[root@yoko named]# vim 163.com.zone
$TTL 86400
@ IN SOA yoko.163.com. root@163.com. (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS yoko.163.com.
IN MX 5 server2.163.com.
yoko IN A 192.168.20.1
server2 IN A 192.168.20.23
[root@yoko named]# vim 163.com.local
$TTL 86400
@ IN SOA yoko root@163.com. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS yoko
1 IN PTR yoko.163.com.
23 IN PTR server2.163.com.
一，sendmail的配置方法
Server1
#rpm -ivh sendmail-cf
[root@server1 mail]# vim sendmail.cf
O DaemonPortOptions=Port=smtp,Addr=0.0.0.0, Name=MTA ###打开所有端口###
[root@server1 mail]# netstat -tlunp |grep 25 ####查看已对所有网段开放端口###
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1625/portmap
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 7824/sendmail: acce
udp 0 0 0.0.0.0:111 0.0.0.0:* 1625/portmap
[root@server1 mail]# vim access
###Connect：
From：和to：连接的是telnet的时候mail from 和 rcpt to，在邮件发出的时候会去check这些用户是否真的存在，若不存在就relay deny.
如果有了connect这项，那么from和to可以任意指定，没有的话只能指定实际存在的用户和域名。###
Connect:192.168.12 RELAY
Connect:192.168.20 RELAY
[root@server1 mail]# vim local-host-names ###表示本台mail server允许接受的域有多个###
sina.com
yahoo.com
[root@server1 mail]service sendmail restart ###重启服务使配置生效###
Test:
Server2 上 163
[root@server2 mail]# mail test@yahoo.com
Subject: test3
yoyoyo
.
Cc:
[root@server2 mail]# mail test@sina.com
Subject: test4
wawawa
.
Cc:
Server1上 sina/yahoo
[root@server1 mail]# su - test
[test@server1 ~]$ mail
>N 14 root@server2 Wed Oct 21 10:52 19/707 "test3"
Message 14:
From root@server2 Wed Oct 21 10:52:11 2009
Date: Wed, 21 Oct 2009 10:52:57 +0800
From:
root
To: test@yahoo.com
Subject: test3
yoyoyo
[test@server1 ~]$ mail
>N 14 root@server2 Wed Oct 21 10:58 19/703 "test4"
& 14
Message 14:
From root@server2 Wed Oct 21 10:58:50 2009
Date: Wed, 21 Oct 2009 10:59:36 +0800
From:
root
To: test@sina.com
Subject: test4
wawawa
二，postfix 配置
Server1
[root@server1 postfix]# vim main.cf
myhostname = server1.sina.com
myhostname = server1.yahoo.com 主机名
mydomain = sina.com 本机的域名
inet_interfaces = all 对所有网段开放25端口
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, yahoo.com指定postfix接收邮件时收件人的域名
mynetworks = 127.0.0.0/8, 192.168.12.0/24 指定你所在的网络的网络地址，postfix系统根据其值来区别用户是远程的还是本地的
relay_domains = $mydestination 规定可以帮忙relay的MX主机，默认为mydestination
Server2
[root@server2 postfix]# vim main.cf
myhostname = server2.163.com
mydomain = 163.com
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, 163.com
mynetworks = 127.0.0.0/8, 192.168.20.0/24
ok！
