[root@localhost wj]# nslookup > server 192.168.0.113 // 切换 dns 服务器为上面配置好的 Default server: 192.168.0.113 Address: 192.168.0.113#53
> // 正向解析 A 类型 Server: 192.168.0.113 Address: 192.168.0.113#53 Name: Address: 192.168.0.113
> mailsrv.david.cn // 正向解析 A 类型 Server: 192.168.0.113 Address: 192.168.0.113#53 Name: mailsrv.david.cn Address: 192.168.0.250
> set q=mx // 正向解析 MX 类型 > david.cn Server: 192.168.0.113 Address: 192.168.0.113#53 david.cn mail exchanger = 10 mailsrv.david.cn.
> www.david.cn // 正向解析 CNAME 类型 Server: 192.168.0.113 Address: 192.168.0.113#53 www.david.cn canonical name = .
> 192.168.0.113 // 反向解析 Server: 192.168.0.113 Address: 192.168.0.113#53 113.0.168.192.in-addr.arpa name = .
> 192.168.0.250 // 反向解析 Server: 192.168.0.113 Address: 192.168.0.113#53 250.0.168.192.in-addr.arpa name = mailsrv.david.cn.0.168.192.in-addr.arpa. >
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