Servidores DNS Principal (mname) y Secundario (rname)
host: santn.com
class: IN
ttl: 3600
type: SOA
mname: ns1.myhostadmin.net
rname: dnsconct.myhostadmin.net
serial: 2010080327
refresh: 3600
retry: 300
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: santn.com
class: IN
ttl: 900
type: MX
pri: 10
target: mx.ym.163.com