Registro DMARC
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;

Servidores DNS Principal (mname) y Secundario (rname)
host: bri.biz
class: IN
ttl: 3600
type: SOA
mname: dns.bis.000.ch
rname: root.bri.biz
serial: 2026022400
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: bri.biz
class: IN
ttl: 3600
type: MX
pri: 0
target: 

Información TXT
host: bri.biz
class: IN
ttl: 3600
type: TXT
txt: v=spf1 -all
entries: Array