Registro DMARC
v=spf1 a:dns.filecyb.org ~all

Servidores DNS Principal (mname) y Secundario (rname)
host: filecyb.org
class: IN
ttl: 3600
type: SOA
mname: dns.filecyb.org
rname: hostmaster.filecyb.org
serial: 1478556170
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: filecyb.org
class: IN
ttl: 3600
type: MX
pri: 0
target: mx.filecyb.org

Información TXT
host: filecyb.org
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a:dns.filecyb.org ~all
entries: Array