Thunderbird 3.1.10 Connection Refused

[Chuck Swiger]

On Jun 14, 2011, at 11:28 AM, Unga wrote:
> I need to access an IMAP server at mail.server.com:45000. And the server uses a self-signed certificate.

The registered port for IMAPS is 993/tcp.  Unless you have very good reasons for running IMAP server on a non-standard port, you should run it on the default location.

Anyway:

   openssl s_client -connect mail.server.com:45000

...is likely to be informative.

Regards,
-- 
-Chuck