Registro DMARC
v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc_agg@vali.email;

Registro IPv4
host: briefing.org
class: IN
ttl: 86400
type: A
ip: 40.83.184.110

Servidores DNS Principal (mname) y Secundario (rname)
host: briefing.org
class: IN
ttl: 86400
type: SOA
mname: pdns77.ultradns.com
rname: trath.briefing.com
serial: 2015040711
refresh: 86400
retry: 86400
expire: 86400
minimum-ttl: 86400