I am using Thunderbird 38.5.1 Greek edition. I have set up Ldap connection for the address book and within address book everything works fine (search / find etc). However, when I try to compose a new mail - the auto-complete feature of the "To" field either doesn't work at all or brings limited number of names from the Ldap server - without bringing the name that I am looking for. I cannot figure out what is causing this behavior. My Actions: 1. I open up the compose window and type into "To" field letter "e" 2. "e" becomes red 3. I leave it for a while (2 min) to be sure that the slow response is not the problem here 4. Nothing happens, "e" remains red 5. I start deleting the letter "e" and then typing it in again. 6. At some point (not always, only if lucky) some names appear in the auto-complete (but not every email that contains "e" in it) 7. At this point, I give up ;-) Also, even if I find the correct address in the address book - when transferred to "compose" window, the address becomes red (as if not found). P.S. The only address book enabled is - Ldap - everything else is unchecked.