Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email

Registro IPv4
host: echo-ntn.org
class: IN
ttl: 7200
type: A
ip: 54.192.44.120

Servidores DNS Principal (mname) y Secundario (rname)
host: echo-ntn.org
class: IN
ttl: 7200
type: SOA
mname: NS93.WORLDNIC.COM
rname: namehost.WORLDNIC.COM
serial: 125080117
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: echo-ntn.org
class: IN
ttl: 3600
type: MX
pri: 0
target: echontn-org01b.mail.protection.outlook.com