"There was a small ruckus created earlier this week when
Microsoft's Jeff Ressler said Exchange Server didn't face much of a
threat from open-source competitors.
"'We still worry more about Lotus than about the open-source
providers, a lot of whom don't have a unified strategy [for trying]
to try and address the bigger players in the market. There are
interesting things happening with some of them, but they don't come
up often in our competitive engagements,' he said..."