Registro DMARC
v=DMARC1; p=reject; rua=mailto:notify@futurenetworking.com; ruf=mailto:notify@futurenetworking.com; fo=1

Servidores DNS Principal (mname) y Secundario (rname)
host: fettigcc.com
class: IN
ttl: 1800
type: SOA
mname: hugh.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2360851040
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

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

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