After decades of service, CUHK Webmail has retired on 3 Jan 2018. The University is now using Office 365 Mail and @Link as email service.
System / IT facilities such as printers can still connect to Mailserv SMTP server to send system emails.
Connection Method: SMTP
Server Name: mailserv.cuhk.edu.hk
Port: 465 or 25
Login ID: Computing ID
Password: OnePass password