Registro DMARC
v=DMARC1; p=reject

Servidores DNS Principal (mname) y Secundario (rname)
host: heatonpublications.org
class: IN
ttl: 21600
type: SOA
mname: dns-sup001.rhs.reyrey.net
rname: webmaster.reynoldswebsolutions.com
serial: 2024121101
refresh: 3600
retry: 7200
expire: 3628800
minimum-ttl: 600

Información TXT
host: heatonpublications.org
class: IN
ttl: 21600
type: TXT
txt: v=spf1 -all
entries: Array