> > Can Ximian be put in to replace Exchange? Or does it mostly > provide a > > nice way to tie linux machines into a MS based network? > > The later, AFAIK. > Most solutions use an "Outlook connector" on the client side, and an IMAP server as backend. They work great untill your mailbox gets to big, and than they get realy slow. You can find an overview for Exchange alternatives on: http://www.slipstick.com/outlook/share.htm