Servidores DNS Principal (mname) y Secundario (rname)
host: 3600.com
class: IN
ttl: 600
type: SOA
mname: dns1.360safe.com
rname: domainadmin.360safe.com
serial: 1740569648
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 180

Servidor de Correo
host: 3600.com
class: IN
ttl: 300
type: MX
pri: 5
target: mx1.ex.360.cn