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

Servidores DNS Principal (mname) y Secundario (rname)
host: lancome.pt
class: IN
ttl: 600
type: SOA
mname: ns1-a.nadns1.fr
rname: technical.nameshield.net
serial: 2025071516
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 7200

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