Servidores DNS Principal (mname) y Secundario (rname)
host: grupdes.com
class: IN
ttl: 7200
type: SOA
mname: NS81.WORLDNIC.com
rname: namehost.WORLDNIC.com
serial: 125092506
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: grupdes.com
class: IN
ttl: 14400
type: MX
pri: 1
target: smtp.google.com