Registro DMARC
v=spf1 mx a ptr ~all

Registro IPv4
host: radio.chck.pl
class: IN
ttl: 3600
type: A
ip: 79.96.49.170

Servidor de Correo
host: radio.chck.pl
class: IN
ttl: 3600
type: MX
pri: 10
target: radio.chck.pl

Información TXT
host: radio.chck.pl
class: IN
ttl: 3600
type: TXT
txt: v=spf1 mx a ptr ~all
entries: Array