Registro DMARC
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;

Servidores DNS Principal (mname) y Secundario (rname)
host: itvcontentmanager.com
class: IN
ttl: 64792
type: SOA
mname: dns0.mtgsy.com
rname: hostmaster
serial: 2024040902
refresh: 3600
retry: 1200
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: itvcontentmanager.com
class: IN
ttl: 3600
type: MX
pri: 0
target: 

Información TXT
host: itvcontentmanager.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 -all
entries: Array