Re: "pilot test of a mail service"
The interesting point is that they think that phrase is meaningful. It isn't like CERN hasn't been running mail services for the last 40 years. What they mean, indeed, is switching from Exchange. Which they switched *to* because the sendmail config was getting hard to maintain after about 1995. But mail to and from <user>@cern.ch has been working pretty well since the late 1990s. Before that it was <user>@<host>.cern.ch which was a bit harder to guess. Lookee here if you don't quite believe me.