Registro DMARC
v=DMARC1; p=quarantine; adkim=r; aspf=r; rua=mailto:dmarc_rua@onsecureserver.net;

Servidores DNS Principal (mname) y Secundario (rname)
host: bitzpro.live
class: IN
ttl: 1800
type: SOA
mname: aragorn.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2408969930
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800