Servidores DNS Principal (mname) y Secundario (rname)
host: nfnnet.org
class: IN
ttl: 21600
type: SOA
mname: ns1.mydyndns.org
rname: zone-admin.dyndns.com
serial: 2007072157
refresh: 10800
retry: 1800
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: nfnnet.org
class: IN
ttl: 3600
type: MX
pri: 30
target: alt2.aspmx.l.google.com

Servidor de Correo
host: nfnnet.org
class: IN
ttl: 3600
type: MX
pri: 10
target: aspmx.l.google.com

Servidor de Correo
host: nfnnet.org
class: IN
ttl: 3600
type: MX
pri: 20
target: alt1.aspmx.l.google.com