Servidores DNS Principal (mname) y Secundario (rname)
host: yuecheng.com
class: IN
ttl: 3600
type: SOA
mname: ns2.east.net.cn
rname: root.ns2.east.net.cn
serial: 1304031743
refresh: 3600
retry: 600
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: yuecheng.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mxbiz2.qq.com

Servidor de Correo
host: yuecheng.com
class: IN
ttl: 3600
type: MX
pri: 5
target: mxbiz1.qq.com