Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc-reports@comercio.com; ruf=mailto:dmarc-failures@comercio.com; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: comercio.com
class: IN
ttl: 900
type: SOA
mname: ns-1843.awsdns-38.co.uk
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: comercio.com
class: IN
ttl: 300
type: MX
pri: 0
target: comercio-com.mail.eo.outlook.com

Información TXT
host: comercio.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:spf.protection.outlook.com include:_spf.google.com -all
entries: Array

Información TXT
host: comercio.com
class: IN
ttl: 300
type: TXT
txt: MS=ms24041191
entries: Array