I seem to get a lot of people visiting this site looking at how to use thunderbird with Exchange. I don't think I ever described it in detail as I found it quite easy. I just enabled an IMAP service on the exchange server and I connect to that from Thunderbird using the standard procedure (username/password). IMAP has the advantage of keeping all the messages on the server so it is someone elses problem to back them up. Also searching through messages seems to work much faster as the server is good at that kind of thing and Microsofts local message archive format, the .pst file, is pretty poor. It is probably just as easy to set up POP3. Email is sent using authenticated smtp so I am prompted for username/password to send messages.
With this setup I don't get shared calendars or any other executive gimmicks but I don't use them anyway.
Sorry if this suggestion seems inane but as far as I know this is the only way this can be done.


Did you get LDAP searches working in thunderbird?