Registro DMARC
v=DMARC1; p=reject;

Servidores DNS Principal (mname) y Secundario (rname)
host: buyourgrowlers.com
class: IN
ttl: 3600
type: SOA
mname: ns1.blacknightdns.com
rname: hostmaster.buyourgrowlers.com
serial: 2026030605
refresh: 900
retry: 900
expire: 604800
minimum-ttl: 60

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