Registro DMARC
Value: v=DMARC1; p=none; rua=mailto:support@clinicstandard.com; ruf=mailto:support@clinicstandard.com; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: clinicstandard.com
class: IN
ttl: 3601
type: SOA
mname: dns1.registrar-servers.com
rname: hostmaster.registrar-servers.com
serial: 1767774466
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3601