You can access basic IMAP from an Exchange server. I was using thunderbird at my last job and it worked fine. Connecting to the LDAP server for the global addre

You can access basic IMAP from an Exchange server. I was using thunderbird at my last job and it worked fine. Connecting to the LDAP server for the global address book took a bit to figure out. I finally got it all connected and figured out though. If your Exchange usage is more than email and shared addresses I don't know how much further you can get into it without Outlook. Not because it's impossible only because I didn't try to do it. As far a sharepoint goes I don't have any real experience with it but it looks like you are able to use it on linux but the activex controls will not work(of course): http://technet.microsoft.com/en-us/library/cc263526.aspx http://technet.microsoft.com/en-us/library/cc263526.aspx