Kopano tries Authentication over NTLM while using OpenID Connect

mniehren

Hi,

we are using Kopano V8.7.24 together with Meet, which run’s very well.

Like described in the Documentation Kopano Connect is usesd as an OpenID
Provider, so in the server.cfg SSO is enabled.

Now we have some old Outlook 2010 clients, which we try to connect over the
old Zarafa-Client.
After doing this, i found in the Server-Log such entries

Timeout while reading from ntlm_auth
Cannot start ntlm_auth: No such file or directory

It seem’s that Kopano in the case of clients over MAPI (Port 236) tries to do the Authentication over NTLM, not over OpenID Connect, which fails as we do not
have an AD, and so no ntlm_auth is needed.

If i set the parameter “enable_sso” to “no” in the server.cfg, everything works with the old Outlook clients, but Meet does not work anymore.

So, is there any way to use Meet and old Outlook-Client’s together ?

best regards
Michael