error connecting IMAP server with self-signed certificate

I try to connect to my own IMAP-server (uses a self-signed certificate) The log says something about errors ans SSPI. The same settings are working with Thunderbird without any problems.

11:29:16 [IMAP] MailExceptions.ConnectionException: Fehler bei SSPI-Aufruf, siehe interne Ausnahme. —> System.Security.Authentication.AuthenticationException: Fehler bei SSPI-Aufruf, siehe interne Ausnahme. —> System.ComponentModel.Win32Exception: Der Client und der Server können keine Daten austauschen, da sie nicht über einen gemeinsamen Algorithmus verfügen

Send us logs please: go to menu Tools->Settings->Logging and check “IMAP” under the problematic account. Then restart eM Client, try to simulate the issue and send us (with reference to this topic) the logs using the same logging settings window.