Authentication problems with Kerio Mail Server. When on the “Diagnostic” tab under accounts > diagnostics. There it says email@example.com@mail.domain.com:993. I can’t authenticate and that authentication string seems weird. We have Kerio with AD integration. Why can’t a client authenticate?
IMAP doesn’t seem to authenticate either which is also weird, similar problem I suspect that it isn’t authenticating the user account properly.
Login conventions I tried: