Servidores DNS Principal (mname) y Secundario (rname)
host: domainkunden.de
class: IN
ttl: 300
type: SOA
mname: master.domainkunden.de
rname: hostmaster.domainkunden.de
serial: 2025071001
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300