Registro DMARC
v=spf1 -all

Servidores DNS Principal (mname) y Secundario (rname)
host: dcompudelta.com
class: IN
ttl: 1800
type: SOA
mname: launch1.spaceship.net
rname: support.spaceship.com
serial: 1774290897
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: dcompudelta.com
class: IN
ttl: 300
type: MX
pri: 0
target: mx2.spacemail.com

Servidor de Correo
host: dcompudelta.com
class: IN
ttl: 300
type: MX
pri: 0
target: mx1.spacemail.com

Información TXT
host: dcompudelta.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:spf.spacemail.com ~all
entries: Array