Servidores DNS Principal (mname) y Secundario (rname)
host: nbedu.net.cn
class: IN
ttl: 21600
type: SOA
mname: ns1.sfn.cn
rname: root.ns1.sfn.cn
serial: 2025062306
refresh: 600
retry: 120
expire: 604800
minimum-ttl: 7200

Servidor de Correo
host: nbedu.net.cn
class: IN
ttl: 600
type: MX
pri: 5
target: mxbiz1.qq.com

Servidor de Correo
host: nbedu.net.cn
class: IN
ttl: 600
type: MX
pri: 10
target: mxbiz2.qq.com

Información TXT
host: nbedu.net.cn
class: IN
ttl: 600
type: TXT
txt: v=spf1 include:spf.mail.qq.com -all
entries: Array