Servidores DNS Principal (mname) y Secundario (rname)
host: riwon.kr
class: IN
ttl: 600
type: SOA
mname: ns.gabia.co.kr.riwon.kr
rname: hosting.gabia.com
serial: 1374642942
refresh: 1800
retry: 600
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: riwon.kr
class: IN
ttl: 86400
type: MX
pri: 10
target: mailapp.hiworks.co.kr