启动 named： [确定]
测试1：解析：
[root@cp1 ~]# dig @192.168.147.137
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> @192.168.147.137
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31526
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
; IN A
;; ANSWER SECTION:
86400 IN A 11.11.11.11
;; AUTHORITY SECTION:
123.com. 86400 IN NS ns.123.com.
;; ADDITIONAL SECTION:
ns.123.com. 86400 IN A 192.168.134.128
;; Query time: 15 msec
;; SERVER: 192.168.147.137#53(192.168.147.137)
;; WHEN: Mon Mar 13 23:37:22 2017
;; MSG SIZE rcvd: 78
测试2：解析bbs.123.com：
[root@cp1 ~]# dig @192.168.147.137 bbs.123.com
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> @192.168.147.137 bbs.123.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9966
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;bbs.123.com. IN A
;; ANSWER SECTION:
bbs.123.com. 86400 IN CNAME
86400 IN A 11.11.11.11
;; AUTHORITY SECTION:
123.com. 86400 IN NS ns.123.com.
;; ADDITIONAL SECTION:
ns.123.com. 86400 IN A 192.168.134.128
;; Query time: 1 msec
;; SERVER: 192.168.147.137#53(192.168.147.137)
;; WHEN: Mon Mar 13 23:38:53 2017
;; MSG SIZE rcvd: 96
测试3：mail.123.com：
[root@cp1 ~]# dig @192.168.147.137 mail.123.com
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> @192.168.147.137 mail.123.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41160
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;mail.123.com. IN A
;; ANSWER SECTION:
mail.123.com. 86400 IN A 192.168.134.129
;; AUTHORITY SECTION:
123.com. 86400 IN NS ns.123.com.
;; ADDITIONAL SECTION:
ns.123.com. 86400 IN A 192.168.134.128
;; Query time: 0 msec
;; SERVER: 192.168.147.137#53(192.168.147.137)
;; WHEN: Mon Mar 13 23:39:42 2017
;; MSG SIZE rcvd: 79
测试4：没有配置的mail2解析失败
[root@cp1 ~]# dig @192.168.147.137 mail2.123.com
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> @192.168.147.137 mail2.123.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 47121
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;mail2.123.com. IN A
;; AUTHORITY SECTION:
123.com. 10800 IN SOA 123.com. admin.123.com. 2015010901 86400 3600 604800 10800
;; Query time: 9 msec
;; SERVER: 192.168.147.137#53(192.168.147.137)
;; WHEN: Mon Mar 13 23:40:34 2017
;; MSG SIZE rcvd: 73
配置一个反向解析的域：147.168.192.zone
（反解析一般用于企业的邮件服务器，能够反解析出我的域名的IP我才给你发邮件）
编辑主配置文件：
[root@cp1 ~]# vim /etc/named.conf
在最后面添加一个域：
zone "147.168.192.in-addr.arpa" IN {
type master;
file "147.168.192.zone";
};
检查主配置文件是否有错：
[root@cp1 ~]# named-checkconf
编辑对应的zone文件：
[root@cp1 ~]# vim /var/named/147.168.192.zone
$TTL 1D
@ IN SOA @ admin.123.com. (
2015010901 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
IN NS ns.123.com.
137 IN PTR ns.123.com.
138 IN PTR mail.123.com.
检查域配置文件是否有错：
[root@cp1 ~]# named-checkzone "147.168.192" /var/named/147.168.192.zone
zone 147.168.192/IN: loaded serial 2015010901
OK
重启：
[root@cp1 ~]# /etc/init.d/named restart