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

Servidores DNS Principal (mname) y Secundario (rname)
host: nju.edu.cn
class: IN
ttl: 3600
type: SOA
mname: dns01.nju.edu.cn
rname: postmaster.no.email.please
serial: 759201870
refresh: 3600
retry: 600
expire: 2592000
minimum-ttl: 3600

Servidor de Correo
host: nju.edu.cn
class: IN
ttl: 3600
type: MX
pri: 5
target: mxbiz1.qq.com

Servidor de Correo
host: nju.edu.cn
class: IN
ttl: 3600
type: MX
pri: 10
target: mxbiz2.qq.com

Información TXT
host: nju.edu.cn
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.mail.qq.com ~all
entries: Array