Registro DMARC
v=DMARC1; p=reject; adkim=r; aspf=r; rua=mailto:dmarc_rua@onsecureserver.net;

Registro IPv4
host: contact-usa.com
class: IN
ttl: 4809
type: A
ip: 72.167.65.231

Servidores DNS Principal (mname) y Secundario (rname)
host: contact-usa.com
class: IN
ttl: 3600
type: SOA
mname: ns67.domaincontrol.com
rname: dns.jomax.net
serial: 2025041700
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600

Servidor de Correo
host: contact-usa.com
class: IN
ttl: 3600
type: MX
pri: 0
target: contactusa-com01i.mail.protection.outlook.com