Servidores DNS Principal (mname) y Secundario (rname)
host: tsai.es
class: IN
ttl: 300
type: SOA
mname: nsjc8hos01.telefonica-data.com
rname: dnsadmin.tsai.es
serial: 2013050834
refresh: 86400
retry: 7200
expire: 2592000
minimum-ttl: 300

Servidor de Correo
host: tsai.es
class: IN
ttl: 300
type: MX
pri: 10
target: mxm.correodeempresas.telefonica.es

Información TXT
host: tsai.es
class: IN
ttl: 300
type: TXT
txt: v=spf1 redirect=spf.dominioabsoluto.net
entries: Array