On Mon, 2010-12-13 at 14:52 +0530, Rahul Sundaram wrote:
the explanation given by a director (who is pro open source) is thatis
linux mail systems are file based and hence slow, whereas Exchange
database based so is faster. They would be quite happy to migrate to
FOSS if these problems are solved.
http://fedoraproject.org/wiki/Zarafa