Servidores DNS Principal (mname) y Secundario (rname)
host: miduohuyu.com
class: IN
ttl: 3600
type: SOA
mname: ns1.oray.net
rname: domain.oray.com.miduohuyu.com
serial: 23
refresh: 1800
retry: 3600
expire: 86400
minimum-ttl: 3600