Registro DMARC
v=DMARC1; p=none

Servidores DNS Principal (mname) y Secundario (rname)
host: cadenauno1240.com
class: IN
ttl: 14400
type: SOA
mname: ns3.hostmar.com
rname: root.hostmar.com
serial: 2026052101
refresh: 28800
retry: 7200
expire: 2000000
minimum-ttl: 86400

Servidor de Correo
host: cadenauno1240.com
class: IN
ttl: 14400
type: MX
pri: 20
target: mx1.cadenauno1240.com

Servidor de Correo
host: cadenauno1240.com
class: IN
ttl: 14400
type: MX
pri: 0
target: mail.cadenauno1240.com

Información TXT
host: cadenauno1240.com
class: IN
ttl: 14400
type: TXT
txt: v=spf1 include:comp.hostmar.com -all
entries: Array