Servidores DNS Principal (mname) y Secundario (rname)
host: myduc.edu.vn
class: IN
ttl: 3600
type: SOA
mname: ns1.matbao.vn
rname: admin.matbao.com
serial: 2025031201
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: myduc.edu.vn
class: IN
ttl: 3600
type: MX
pri: 0
target: myduc-edu-vn.mail.protection.outlook.com

Información TXT
host: myduc.edu.vn
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.protection.outlook.com -all
entries: Array