Registro DMARC
v=DMARC1; p=reject; adkim=s; aspf=s;

Servidores DNS Principal (mname) y Secundario (rname)
host: thyroidcommunity.com
class: IN
ttl: 900
type: SOA
mname: ns1.sanofi-synthelabo.com
rname: gtly-domtech.sanofi.com
serial: 2016030775
refresh: 28800
retry: 14400
expire: 3600000
minimum-ttl: 900

Servidor de Correo
host: thyroidcommunity.com
class: IN
ttl: 900
type: MX
pri: 0
target: 

Información TXT
host: thyroidcommunity.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array