Registro DMARC
v=DMARC1; p=none

Registro IPv4
host: student.7college.du.ac.bd
class: IN
ttl: 14400
type: A
ip: 103.221.252.74

Servidores DNS Principal (mname) y Secundario (rname)
host: student.7college.du.ac.bd
class: IN
ttl: 79143
type: SOA
mname: ns1.ducmc.com
rname: my.email.com
serial: 2025021951
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 86400

Servidor de Correo
host: student.7college.du.ac.bd
class: IN
ttl: 7143
type: MX
pri: 0
target: student.7college.du.ac.bd