Servidores DNS Principal (mname) y Secundario (rname)
host: datamart.biz
class: IN
ttl: 81883
type: SOA
mname: ns.inwx.de
rname: hostmaster.inwx.de
serial: 2025020500
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: datamart.biz
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.datamart.biz