Servidores DNS Principal (mname) y Secundario (rname)
host: demo2.cz
class: IN
ttl: 3600
type: SOA
mname: ns.skok.cz
rname: hostmaster.skok.cz
serial: 2025020701
refresh: 21600
retry: 3600
expire: 2419200
minimum-ttl: 3600

Servidor de Correo
host: demo2.cz
class: IN
ttl: 3600
type: MX
pri: 10
target: mx.skok.cz

Servidor de Correo
host: demo2.cz
class: IN
ttl: 3600
type: MX
pri: 20
target: mxbackup.skok.cz