Servidores DNS Principal (mname) y Secundario (rname)
host: dropknox.com
class: IN
ttl: 3600
type: SOA
mname: ns1.ydns.io
rname: hostmaster.ydns.io
serial: 1704393653
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: dropknox.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.helix360.de

Información TXT
host: dropknox.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 mx -all
entries: Array