Registro DMARC
v=DMARC1; p=reject; fo=1; rua=mailto:dmarcreports@medica.com; ruf=mailto:dmarcreports@medica.com

Servidores DNS Principal (mname) y Secundario (rname)
host: premiermedinsurance.com
class: IN
ttl: 900
type: SOA
mname: ns3.medica.com
rname: postmaster.medica.com
serial: 2024040806
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400

Información TXT
host: premiermedinsurance.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array