Servidores DNS Principal (mname) y Secundario (rname)
host: extremevr.kr
class: IN
ttl: 1800
type: SOA
mname: extremevr.kr
rname: postmaster.extremevr.kr
serial: 20171114
refresh: 10800
retry: 3600
expire: 3600000
minimum-ttl: 43200

Servidor de Correo
host: extremevr.kr
class: IN
ttl: 1800
type: MX
pri: 20
target: ALT.ASPMX.daum.net

Servidor de Correo
host: extremevr.kr
class: IN
ttl: 1800
type: MX
pri: 10
target: ASMX.daum.net