Registro DMARC
v=DMARC1;p=reject;

Registro IPv4
host: duatel.es
class: IN
ttl: 150
type: A
ip: 52.59.120.70

Servidores DNS Principal (mname) y Secundario (rname)
host: duatel.es
class: IN
ttl: 150
type: SOA
mname: docks19.rzone.de
rname: hostmaster.strato-rz.de
serial: 2020052047
refresh: 86400
retry: 7200
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: duatel.es
class: IN
ttl: 150
type: MX
pri: 10
target: duatel-es.mail.protection.outlook.com

Información TXT
host: duatel.es
class: IN
ttl: 150
type: TXT
txt: v=spf1 include:spf.protection.outlook.com -all
entries: Array