Registro DMARC
v=DMARC1; p=quarantine; adkim=s; aspf=s

Registro IPv4
host: to-portal.com
class: IN
ttl: 8261
type: A
ip: 5.9.60.252

Servidores DNS Principal (mname) y Secundario (rname)
host: to-portal.com
class: IN
ttl: 21600
type: SOA
mname: ns1.to-portal.com
rname: dimsnest.gmail.com
serial: 2025060605
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 10800

Servidor de Correo
host: to-portal.com
class: IN
ttl: 21600
type: MX
pri: 10
target: mail.to-portal.com

Información TXT
host: to-portal.com
class: IN
ttl: 21600
type: TXT
txt: v=spf1 +a +mx +a:server.to-portal.com -all
entries: Array