Registro IPv4
host: sbm-itb.net
class: IN
ttl: 659
type: A
ip: 127.0.0.1

Servidores DNS Principal (mname) y Secundario (rname)
host: sbm-itb.net
class: IN
ttl: 72660
type: SOA
mname: ns1.idwebhost.com
rname: emailserver.jcamp.net
serial: 2026053123
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: sbm-itb.net
class: IN
ttl: 660
type: MX
pri: 0
target: sbm-itb.net