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

Servidores DNS Principal (mname) y Secundario (rname)
host: lsu.edu.cn
class: IN
ttl: 3600
type: SOA
mname: ns.lsu.edu.cn
rname: root.lsu.edu.cn
serial: 2604230933
refresh: 3600
retry: 1800
expire: 604800
minimum-ttl: 3600

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

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