Registro DMARC
valor: v=DMARC1; p=none;

Servidores DNS Principal (mname) y Secundario (rname)
host: icfes.gov.co
class: IN
ttl: 900
type: SOA
mname: ns-2.awsdns-00.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: icfes.gov.co
class: IN
ttl: 3600
type: MX
pri: 0
target: icfes-gov-co.mail.protection.outlook.com

Información TXT
host: icfes.gov.co
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.protection.outlook.com -all
entries: Array