Registro DMARC
v=DMARC1; p=quarantine; aspf=s; adkim=r 

Registro IPv4
host: 12air-medical.com
class: IN
ttl: 900
type: A
ip: 185.34.192.172

Servidores DNS Principal (mname) y Secundario (rname)
host: 12air-medical.com
class: IN
ttl: 930
type: SOA
mname: ns1.cdmon.net
rname: hostmaster.12air-medical.com
serial: 1
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: 12air-medical.com
class: IN
ttl: 300
type: MX
pri: 10
target: mail.12air-medical.com

Información TXT
host: 12air-medical.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:_spf.srv.cat ~all
entries: Array