Registro DMARC
v=DMARC1;p=none;pct=100;rua=mailto:postmaster@tadtopmails.com

Servidores DNS Principal (mname) y Secundario (rname)
host: tadtopmails.com
class: IN
ttl: 900
type: SOA
mname: ns-71.awsdns-08.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: tadtopmails.com
class: IN
ttl: 3600
type: MX
pri: 0
target: maila.tadtopmails.com

Información TXT
host: tadtopmails.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a mx include:spf1.tadtopmails.com ~all
entries: Array