Servidores DNS Principal (mname) y Secundario (rname)
host: uupnxt.com
class: IN
ttl: 21600
type: SOA
mname: dbru.br.ns.els-gms.att.net
rname: rm-hostmaster.ems.att.com
serial: 4
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400

Servidor de Correo
host: uupnxt.com
class: IN
ttl: 21600
type: MX
pri: 5
target: maila30.webcontrolcenter.com