DNS 服务 （系统需要配置静态 IP 地址）
yum install bing* -y
一、配置 NDS 域名解析；
直接添加以下内容：
[root@mail ~]# cat /etc/named.conf
zone "wangxiaojing.com" IN {
type master;
file "wangxiaojing.com.zone";
allow-update{none;};
};
zone "2.16.172.in-addr.arpa" IN {
type master;
file "2.16.172.local";
allow-update{none;};
};
二、配置正向解析
[root@mail ~]# cat /var/named/wangxiaojing.com.zone
$TTL 1D
@ IN SOA @ dns.wangxiaojing.com. (
; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
NS @
A 127.0.0.1
AAAA ::
IN NS dns.wangxiaojing.com.
IN MX dns.wangxiaojing.com.
dns IN A 172.16.2.18
mail IN CNAME dns
pop3 IN CNAME dns
smtp IN CNAME dns
imap4 IN CNAME dns
三、配置反向解析
[root@mail ~]# cat /var/named/2.16..local
$TTL 1D
@ IN SOA @ dns.wangxiaojing.com. (
; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
NS @
A 127.0.0.1
AAAA ::
IN NS dns.wangxiaojing.com.
IN PTR dns.wangxiaojing.com.
四、启动测试；
chkconfig named on
service named start
五、配置 /etc/resolv.conf
（bind 重启之后配置会丢失,编辑保存就行）
search wangxiaojing.com
nameserver 172.16.2.18
nameserver 8.8.8.8
nameserver 8.8.4.4
六、检测 NDS 解析：
[root@mail ~]# nslookup -qt=mx mail.wangxiaojing.com
*** Invalid option: qt=mx
Server: 172.16.2.18
Address: 172.16.2.18# mail.wangxiaojing.com canonical name = dns.wangxiaojing.com.
Name: dns.wangxiaojing.com
Address: 172.16.2.18
配置注意细节 " . " 。