Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc.feed.rua@mailxu.com; ruf=mailto:dmarc.feed.ruf@mailxu.com; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: mailxu.com
class: IN
ttl: 1800
type: SOA
mname: mario.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2367086452
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: mailxu.com
class: IN
ttl: 300
type: MX
pri: 10
target: mail2.mailxu.com

Servidor de Correo
host: mailxu.com
class: IN
ttl: 300
type: MX
pri: 10
target: mail1.mailxu.com

Información TXT
host: mailxu.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx ~all
entries: Array