Registro DMARC
v=DMARC1; p=quarantine; pct=100; adkim=s; aspf=s

Servidores DNS Principal (mname) y Secundario (rname)
host: socialmarketertraining.com
class: IN
ttl: 3601
type: SOA
mname: dns1.registrar-servers.com
rname: hostmaster.registrar-servers.com
serial: 1695894008
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3601

Servidor de Correo
host: socialmarketertraining.com
class: IN
ttl: 1799
type: MX
pri: 10
target: sl.imsosecure.com

Información TXT
host: socialmarketertraining.com
class: IN
ttl: 1799
type: TXT
txt: v=spf1 include:imsosecure.com -all
entries: Array