Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: upubuntu.com
class: IN
ttl: 7478
type: A
ip: 144.217.212.214

Servidores DNS Principal (mname) y Secundario (rname)
host: upubuntu.com
class: IN
ttl: 21600
type: SOA
mname: ns1.upubuntu.com
rname: hostmaster.upubuntu.com
serial: 2026093001
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 86400

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

Información TXT
host: upubuntu.com
class: IN
ttl: 14400
type: TXT
txt: v=spf1 +a +mx +ip4:51.222.203.183 +ip4:144.217.212.214 ~all
entries: Array