Registro DMARC
v=DMARC1; p=none; sp=none

Registro IPv4
host: mtbacademy.pl
class: IN
ttl: 900
type: A
ip: 2.57.137.26

Servidores DNS Principal (mname) y Secundario (rname)
host: mtbacademy.pl
class: IN
ttl: 21600
type: SOA
mname: ns1.zenbox.pl
rname: kontakt.zenbox.pl
serial: 2025050305
refresh: 14400
retry: 3600
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: mtbacademy.pl
class: IN
ttl: 900
type: MX
pri: 20
target: mx2.zenbox.pl

Servidor de Correo
host: mtbacademy.pl
class: IN
ttl: 900
type: MX
pri: 10
target: mx1.zenbox.pl

Servidor de Correo
host: mtbacademy.pl
class: IN
ttl: 900
type: MX
pri: 30
target: mx3.zenbox.pl

Información TXT
host: mtbacademy.pl
class: IN
ttl: 900
type: TXT
txt: v=spf1 a mx include:_spf.zenbox.pl -all
entries: Array