Servidores DNS Principal (mname) y Secundario (rname)
host: f5w.net
class: IN
ttl: 180
type: SOA
mname: f1g1ns1.dnspod.net
rname: freednsadmin.dnspod.com
serial: 1780020155
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 180

Servidor de Correo
host: f5w.net
class: IN
ttl: 90
type: MX
pri: 10
target: emx21.cn4e.com