Servidores DNS Principal (mname) y Secundario (rname)
host: iotworkshop.com
class: IN
ttl: 600
type: SOA
mname: dns17.hichina.com
rname: hostmaster.hichina.com
serial: 2026011209
refresh: 3600
retry: 1200
expire: 86400
minimum-ttl: 600

Servidor de Correo
host: iotworkshop.com
class: IN
ttl: 600
type: MX
pri: 5
target: mx.zmail300.cn

Servidor de Correo
host: iotworkshop.com
class: IN
ttl: 600
type: MX
pri: 50
target: mx1.zmail300.cn

Información TXT
host: iotworkshop.com
class: IN
ttl: 600
type: TXT
txt: v=spf1 include:spfv.zmail300.cn -all
entries: Array