Registro DMARC
v=DMARC1;p=reject;rua=mailto:mailauth-reports@qq.com

Registro IPv4
host: sgmtu.edu.cn
class: IN
ttl: 21600
type: A
ip: 218.194.238.45

Servidores DNS Principal (mname) y Secundario (rname)
host: sgmtu.edu.cn
class: IN
ttl: 21600
type: SOA
mname: dns.sgmtu.edu.cn
rname: root.dns.sgmtu.edu.cn
serial: 3
refresh: 604800
retry: 86400
expire: 2419200
minimum-ttl: 604800

Servidor de Correo
host: sgmtu.edu.cn
class: IN
ttl: 21600
type: MX
pri: 10
target: mxbiz2.qq.com

Servidor de Correo
host: sgmtu.edu.cn
class: IN
ttl: 21600
type: MX
pri: 5
target: mxbiz1.qq.com

Información TXT
host: sgmtu.edu.cn
class: IN
ttl: 21600
type: TXT
txt: v=spf1 include:spf.mail.qq.com ~all
entries: Array