• H12 is our main mail server, this server support the following connection method.

• Open https://sxl.net/app > click on WebMail, login with your email address and password

• Read this first » What are POP3 and IMAP, Which one should I use

POP

• server name: h12.hksx.com
• port: 995 SSL/TLS « Try this first
• port: 110 No-SSL

IMAP

• server name: h12.hksx.com
• port: 993 SSL/TLS
• port: 143 No-SSL

SMTP

• server name: h12.hksx.com
• port 465 SSL/TLS « Try this first
• port 587 STARTLS or No-SSL « second choice
• port 25 STARTTLS or No-SSL
• port 2525 STARTTLS or No-SSL

• Before setup, please try to login WebMail once, to make sure your email address and password are correct!
• If connection failed, but it ask for password, it means your password is wrong.
• If connection failed, but it does not ask for password, it means it is a connection problem, please try other connection methods (SSL/STARTTLS/No-SSL, etc)

• Most people should try the SSL/TLS connection first. This method should work for 99% of modern devices.
• Some country/state/company firewall blocked one or the other ports. Some software/device/versions has bug in one or the other connection methods. That's why people invented different workaround methods. Please try other methods if SSL does not work for you.