Exchange Killer?

[klussier at comcast.net]

A lot of people have looked for an open source "Exchange Killer". It has always ended up being a bunch of open source projects cobbled together, and never "quite enough". I have been using Scalix for corporate e-mail for about a year now, and most of my users don't know that they aren't using Exchange. It's a proprietary system based on HP OpenMail, and it works great. It has everything that Exchange has by way of features, but since it's running on Linux, and also impliments some open source tools, it fits perfectly into an existing non-MS environment. It can authenticate against my existing OpenLDAP server, etc. 

There are several versions of Scalix: 
1) Enterprise Edition - All features (Premium User Licenses)
2) Small Business - All features except for multi-server and HA.
3) Community Edition - All features for 25 "Premium Users", unlimited Standard Users have access to basic features (no group calendars, Outlook Access, etc.)
4) Community Edition Raw - Bleeding edge code available for multiple distro's (debian, Centos, etc.)

I just received the monthly news letter from them, and they had a link to an interesting press release:

Linux Email Leader Scalix Announces Plans to Make Community Edition an Open Source Project :
http://www.scalix.com/news/release45.html

So, the basic fuctionality will be Open Sourced, allowing people access to the code that allows for Exchange functionality. Could this be the Exchange Killer that we have all been looking for?

C-Ya,
Kenny