Registro DMARC
v=DMARC1;p=reject;

Registro IPv4
host: fast2mine.com
class: IN
ttl: 300
type: A
ip: 141.193.213.10

Servidores DNS Principal (mname) y Secundario (rname)
host: fast2mine.com
class: IN
ttl: 900
type: SOA
mname: ns-1549.awsdns-01.co.uk
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: fast2mine.com
class: IN
ttl: 3600
type: MX
pri: 0
target: fast2mine-com.mail.protection.outlook.com

Información TXT
host: fast2mine.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
entries: Array