Registro DMARC
v=DMARC1; p=none; ruf=mailto:dmarc@pku.edu.cn; rua=mailto:dmarc_report@pku.edu.cn

Registro IPv4
host: pku.edu.cn
class: IN
ttl: 300
type: A
ip: 162.105.131.160

Servidores DNS Principal (mname) y Secundario (rname)
host: pku.edu.cn
class: IN
ttl: 300
type: SOA
mname: ns.pku.edu.cn
rname: hostmaster.pku.edu.cn
serial: 2025071203
refresh: 3600
retry: 300
expire: 86400
minimum-ttl: 3600

Servidor de Correo
host: pku.edu.cn
class: IN
ttl: 300
type: MX
pri: 10
target: gateway.pku.edu.cn

Servidor de Correo
host: pku.edu.cn
class: IN
ttl: 300
type: MX
pri: 5
target: mx-pku-edu-cn.icoremail.net

Información TXT
host: pku.edu.cn
class: IN
ttl: 3600
type: TXT
txt: _hzos8v1tcdrxo5uk1i5qyl7pnu7w15x
entries: Array

Información TXT
host: pku.edu.cn
class: IN
ttl: 3600
type: TXT
txt: v=spf1 ip4:162.105.129.0/24 include:spf.icoremail.net -all
entries: Array