Servidores DNS Principal (mname) y Secundario (rname)
host: auz.net
class: IN
ttl: 3600
type: SOA
mname: ns1.instra.net.au
rname: root.instra.com
serial: 2016022304
refresh: 3600
retry: 600
expire: 86400
minimum-ttl: 3600

Servidor de Correo
host: auz.net
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.instra.com.au