Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc@nominaal.com

Servidores DNS Principal (mname) y Secundario (rname)
host: nominaal.com
class: IN
ttl: 3600
type: SOA
mname: ns33.cloudns.net
rname: support.cloudns.net
serial: 2025062625
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 3600

Información TXT
host: nominaal.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 -all
entries: Array