Servidores DNS Principal (mname) y Secundario (rname)
host: dnsprobe.net
class: IN
ttl: 300
type: SOA
mname: ns-cloud-b1.googledomains.com
rname: cloud-dns-hostmaster.google.com
serial: 15
refresh: 21600
retry: 3600
expire: 259200
minimum-ttl: 300

Servidor de Correo
host: dnsprobe.net
class: IN
ttl: 3600
type: MX
pri: 40
target: alt4.gmr-smtp-in.l.google.com

Servidor de Correo
host: dnsprobe.net
class: IN
ttl: 3600
type: MX
pri: 20
target: alt2.gmr-smtp-in.l.google.com

Servidor de Correo
host: dnsprobe.net
class: IN
ttl: 3600
type: MX
pri: 5
target: gmr-smtp-in.l.google.com

Servidor de Correo
host: dnsprobe.net
class: IN
ttl: 3600
type: MX
pri: 10
target: alt1.gmr-smtp-in.l.google.com

Servidor de Correo
host: dnsprobe.net
class: IN
ttl: 3600
type: MX
pri: 30
target: alt3.gmr-smtp-in.l.google.com