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

Servidores DNS Principal (mname) y Secundario (rname)
host: dematte.org
class: IN
ttl: 21600
type: SOA
mname: ns-cloud-e1.googledomains.com
rname: cloud-dns-hostmaster.google.com
serial: 7
refresh: 21600
retry: 3600
expire: 259200
minimum-ttl: 300

Servidor de Correo
host: dematte.org
class: IN
ttl: 14400
type: MX
pri: 10
target: mxa.mailgun.org

Servidor de Correo
host: dematte.org
class: IN
ttl: 14400
type: MX
pri: 10
target: mxb.mailgun.org

Información TXT
host: dematte.org
class: IN
ttl: 14400
type: TXT
txt: v=spf1 include:mailgun.org ~all
entries: Array