Registro DMARC
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:94b593400ec04b9ba5502dc400d587aa@dmarc-reports.cloudflare.net;

Servidores DNS Principal (mname) y Secundario (rname)
host: und0.com
class: IN
ttl: 1800
type: SOA
mname: edna.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2402895053
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: und0.com
class: IN
ttl: 300
type: MX
pri: 34
target: route2.mx.cloudflare.net

Servidor de Correo
host: und0.com
class: IN
ttl: 300
type: MX
pri: 72
target: route1.mx.cloudflare.net

Servidor de Correo
host: und0.com
class: IN
ttl: 300
type: MX
pri: 53
target: route3.mx.cloudflare.net

Información TXT
host: und0.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:_spf.mx.cloudflare.net -all
entries: Array