Registro DMARC
v=DMARC1; p=reject; rua=mailto:re+8890593c58c6@inbound.dmarcdigests.com; pct=100; adkim=s; aspf=s

Servidores DNS Principal (mname) y Secundario (rname)
host: contextravel.com
class: IN
ttl: 3600
type: SOA
mname: ns77.domaincontrol.com
rname: dns.jomax.net
serial: 2022050501
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600