Registro DMARC
v=DMARC1; p=reject; adkim=s; aspf=s

Registro IPv4
host: heder.pl
class: IN
ttl: 13061
type: A
ip: 185.253.212.22

Servidores DNS Principal (mname) y Secundario (rname)
host: heder.pl
class: IN
ttl: 3600
type: SOA
mname: ns1.aftermarket.pl
rname: kontakt.aftermarket.pl
serial: 2501231029
refresh: 3600
retry: 15
expire: 86400
minimum-ttl: 3600

Servidor de Correo
host: heder.pl
class: IN
ttl: 300
type: MX
pri: 10
target: blackhole.aftermarket.pl

Información TXT
host: heder.pl
class: IN
ttl: 13060
type: TXT
txt: v=spf1 mx -all
entries: Array