Microsoft Exchange

from The Free On-line Dictionary of Computing (8 July 2008)

Microsoft Exchange
Exchange Server

   <messaging> {Microsoft}'s messaging and enterprise
   collaboration server.  Exchange's primary role is as an
   {electronic mail} {message store} but it can also store
   calendars, task lists, contact details, and other data.

   [Better descripton?  URL?]

   (1999-09-17)