For one of the projects I'm working on, our site currently has around 15 PCs (XP/Vista/7 and one file server running Windows Server 2008.
They use externally-hosted email (accessed in Outlook via IMAP) but I would like to have an Exchange server in order to centralize Outlook contacts/calendar info and get web access from OWA.
Can Exchange be set up in a workgroup, or if I set up a domain with the new Exchange server? Would any of these options work? Thanks so much for your help.