Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: grtcompany.com
class: IN
ttl: 90
type: A
ip: 18.172.226.50

Registro IPv4
host: grtcompany.com
class: IN
ttl: 90
type: A
ip: 18.172.226.36

Registro IPv4
host: grtcompany.com
class: IN
ttl: 90
type: A
ip: 18.172.226.88

Registro IPv4
host: grtcompany.com
class: IN
ttl: 90
type: A
ip: 18.172.226.78

Servidores DNS Principal (mname) y Secundario (rname)
host: grtcompany.com
class: IN
ttl: 900
type: SOA
mname: ns-1462.awsdns-54.org
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: grtcompany.com
class: IN
ttl: 300
type: MX
pri: 1
target: autodiscover.outlook.com