For most Mac users, the phrase Exchange Server (download) has been the cause of a great deal of annoyance and frustration. Once Microsoft did have an actual half-decent Outlook client for the Mac, but that was done by the Exchange team, and as soon as Mac OS X came out, the company just walked away from it, leaving its Macintosh Business Unit to clean up the mess and try to shoehorn Exchange functionality into Entourage. For the resources at their disposal, the Entourage team has done an admirable job, with major Exchange improvements with every release. Still, the “second-class citizen” part remains clear. If you aren’t on Windows, you get what you get and be happy you even get that.