I just updated to 2022-04. Everything seems to work (send and receive email, admin interface,…) the only thing is: I cannot login to SoGo Webmail. When trying to login I only get the message: Unhandled error response, retry?
I checked the logs and the only thing I see is in the postfix logs:
warning: unknown[212.70.149.xxx]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
The IP address does not belong to my server or any container running on it and “UGFzc3dvcmQ6” is base64 for “Password:”