Servidores DNS Principal (mname) y Secundario (rname)
host: shenguangtong.cn
class: IN
ttl: 180
type: SOA
mname: ns11.xincache.com
rname: ns12.xincache.com
serial: 1780975505
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 180

Servidor de Correo
host: shenguangtong.cn
class: IN
ttl: 222
type: MX
pri: 10
target: mxbiz2.qq.com

Servidor de Correo
host: shenguangtong.cn
class: IN
ttl: 222
type: MX
pri: 5
target: mxbiz1.qq.com