Registro DMARC
v=spf1 include:spf.protection.outlook.com -all

Registro IPv4
host: pythonmarketing.com
class: IN
ttl: 1143
type: A
ip: 208.91.197.27

Servidores DNS Principal (mname) y Secundario (rname)
host: pythonmarketing.com
class: IN
ttl: 7200
type: SOA
mname: NS77.WORLDNIC.com
rname: namehost.WORLDNIC.com
serial: 117111400
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: pythonmarketing.com
class: IN
ttl: 3600
type: MX
pri: 10
target: pythonmarketing-com.mail.protection.outlook.com

Información TXT
host: pythonmarketing.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.protection.outlook.com ~all
entries: Array