Nmap scan report for hvcsnd.edu.vn (14.225.3.10)
Host is up (0.28s latency).
rDNS record for 14.225.3.10: mail.hvcsnd.edu.vn
Not shown: 93 filtered tcp ports (no-response)
PORT     STATE SERVICE
25/tcp   open  smtp
80/tcp   open  http
110/tcp  open  pop3
143/tcp  open  imap
443/tcp  open  https
587/tcp  open  submission
3389/tcp open  ms-wbt-server

Nmap done: 1 IP address (1 host up) scanned in 8.36 seconds