学习了一下DNS的配置（http://tech.ddvip.com/2008-11/122786350595966.html）
1、安装BIND工具
service named start
主配置文件 /etc/named.conf
区文件目录 /var/named/chroot/var/named/
2、我的named.conf
zone "caoshiming.com" IN {
type master;
file "caoshiming.com.zone";
};
zone "220.168.192.in-addr.arpa" IN {
type master;
file "com.caoshiming.zone";
};
3、我的正向数据库文件caoshiming.com.zone
$TTL 1D
@ IN SOA www.caoshiming.com. mail.caoshiming.com. (
2009042302 ; serial
3H ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
@ IN NS www.caoshiming.com.
@ IN MX 10 mail.caoshiming.com.
www IN A 192.168.220.138
mail IN A 192.168.220.138
3、我的反向数据库文件com.caoshiming.zone
$TTL 1D
@ IN SOA www.caoshiming.com. mail.caoshiming.com. (
20090403215 ; serial
3H ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
@ IN NS www.caoshiming.com.
@ IN MX 10 mail.caoshiming.com.
138 IN PTR www.caoshiming.com.
4、注意事项
域名后面要加.
service named start 启动，成功了，但是没法测试，也不知道最终成功了没有