Hi all I have a client who has an existing Windows Server 2003, quite a few Windows machines and four Mac machines. The problem is the Mac's are now running 10.6 and Office 2011, but the Win server is running Exchange 2003 as well. As this doesn't run Exchange Web Services, Outlook 2011 gives a lot of headaches. I have used the DavMail application but even that has stopped providing iCal information from Exchange. I am thinking of recommending a Mac Mini with Lion Server. The question I have is basically this... will the following combinations of technology/applications work nicely or be a real pain the butt to get working? Open Directory <-> Active Directory connector Address Book server <-> Exchange 2003 iCal server <-> Exchange 2003 Mail server <-> Exchange 2003 It certainly will make the Mac users lives happier but if it ain't going to talk to the Windows server, thats dumped on that one for me! Any comments or advice given is greatly appreciated.