h12 email server connection methods

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

WebMail

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

Incoming Mail Server

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

Outgoing mail server

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

Common Problems

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)

Why are there so many connection methods? Which one should I use?

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.

Tracedump:

newBaseSize: 16pt
newBaseSizeInPt: 16