Registro DMARC
v=DMARC1; p=reject; rua=mailto:postmaster@rmdsm.org; fo=1; ri=3600; sp=reject

Servidores DNS Principal (mname) y Secundario (rname)
host: rmdsm.org
class: IN
ttl: 900
type: SOA
mname: ns-448.awsdns-56.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: rmdsm.org
class: IN
ttl: 600
type: MX
pri: 10
target: mtain-ac101.asynccomm.zoom.us

Servidor de Correo
host: rmdsm.org
class: IN
ttl: 600
type: MX
pri: 20
target: mtain-ac102.asynccomm.zoom.us

Servidor de Correo
host: rmdsm.org
class: IN
ttl: 600
type: MX
pri: 30
target: mtain-ac103.asynccomm.zoom.us

Información TXT
host: rmdsm.org
class: IN
ttl: 600
type: TXT
txt: v=spf1 include:_spf.asynccomm.zoom.us ~all
entries: Array