Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc@sslbmasons.com

Servidores DNS Principal (mname) y Secundario (rname)
host: sslbmasons.com
class: IN
ttl: 3600
type: SOA
mname: ns1.name.com
rname: hostmaster.nsone.net
serial: 1695809957
refresh: 43200
retry: 7200
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: sslbmasons.com
class: IN
ttl: 300
type: MX
pri: 10
target: mail.sslbmasons.com

Información TXT
host: sslbmasons.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx +all
entries: Array