Registro DMARC
v=DMARC1; p=none; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;

Servidores DNS Principal (mname) y Secundario (rname)
host: uplic.com
class: IN
ttl: 300
type: SOA
mname: ns1.brandsight-dns.com
rname: service.gcd.com
serial: 1706903550
refresh: 86400
retry: 7200
expire: 604800
minimum-ttl: 300