> As per the subject, I am about to pitch the idea of dumping > Exchange > and moving to Postfix. From what I can observe, the Calendar and > Meeting functions are used very little if at all.
If you want true drop in replacement, and so on (IE still use active directory, etc), you can check out postpath ( http://www.postpath.com/). It was just recently purchased by Cisco. It is apparently designed to be dropped into a MS environment without the MS environment even knowing it is a Linux box. I myself have not used it... Just been reading a lot of it lately. d