Servidores DNS Principal (mname) y Secundario (rname)
host: cnc.com.tw
class: IN
ttl: 3600
type: SOA
mname: dns.h3.com.tw
rname: hostmaster.h3.com.tw
serial: 6
refresh: 900
retry: 600
expire: 86400
minimum-ttl: 3600

Servidor de Correo
host: cnc.com.tw
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.h3.com.tw