Servidores DNS Principal (mname) y Secundario (rname)
host: iccas.ac.cn
class: IN
ttl: 21600
type: SOA
mname: ns.iccas.ac.cn
rname: root.mail.iccas.ac.cn
serial: 2100000523
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 86400

Servidor de Correo
host: iccas.ac.cn
class: IN
ttl: 15444
type: MX
pri: 5
target: mx.cstnet.cn

Información TXT
host: iccas.ac.cn
class: IN
ttl: 21600
type: TXT
txt: v=spf1 include:spf.mail.cstnet.cn -all
entries: Array