Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc@c-b-inc.com; ruf=mailto:dmarc@c-b-inc.com; sp=reject; aspf=s; adkim=r; pct=100; rf=afrf; ri=86400;

Servidores DNS Principal (mname) y Secundario (rname)
host: c-b-inc.com
class: IN
ttl: 3600
type: SOA
mname: ns71.cloudns.net
rname: support.cloudns.net
serial: 1956070210
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: c-b-inc.com
class: IN
ttl: 3600
type: MX
pri: 0
target: mx.c-b-inc.com

Información TXT
host: c-b-inc.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a:dns.c-b-inc.com ~all
entries: Array