I have just setup an MS Server 2016 AD & installed the Kopano AD extension. I then installed a UCS 4.2 instance as a member of the AD domain & installed both Kopano Core & Kopano Webapp.
The UCS instance shows all the AD users & Kopano properties as expected. However, attempting to login to Webapp is met with:-
Logon failed. Please verify your credentials and try again.
Corresponding to the login attempt in the /var/log/kopano/server.log file I see:-
Tue Jun 5 09:04:30 2018: [error ] LDAP search error: Can't contact LDAP server. Will unbind, reconnect and retry. Tue Jun 5 09:04:30 2018: [warning] Authentication by plugin failed for user "username_here": Trying to authenticate failed: username_here not found in LDAP;
But if I use ldapsearch from the UCS command line to query the AD, I can do so without issue. So it seems that kopano server isn’t binding to the AD somehow. Lifting the loglevel in server.cfg doesn’t really provide any more useful info. So just looking for a little guidance as to where I can look next to further troubleshoot the issue.