Registro DMARC
v=spf1 a mx include:gransy.com

Registro IPv4
host: jutube.cz
class: IN
ttl: 900
type: A
ip: 77.78.104.3

Servidores DNS Principal (mname) y Secundario (rname)
host: jutube.cz
class: IN
ttl: 1800
type: SOA
mname: ns.gransy.com
rname: root.gransy.com
serial: 2723802292
refresh: 86400
retry: 900
expire: 1209600
minimum-ttl: 1800

Servidor de Correo
host: jutube.cz
class: IN
ttl: 900
type: MX
pri: 10
target: mail.jutube.cz

Información TXT
host: jutube.cz
class: IN
ttl: 1800
type: TXT
txt: v=spf1 a mx include:gransy.com
entries: Array