You might want to checkout Scalix, OpenGroupware.org and openXchange, all of which have (more or less) all the features you mentioned.
OpenXchange requires that you buy a connector for Outlook access, but it's pretty cheap.
I think Scalix provides the Outlook connector for free, but requires that you use a premium user with the connector. The first 25 premium users in the community edition of Scalix are free, but when you need more premium users, you need to buy licenses for them. The number of standard users in Scalix is unlimited in the free (community) edition, but standard users only have email, and can't collaborate/share calendars.
Access to mobile phones and PDAs might have to go through Funambol - you'll need to check that out. I had no need for this, so I didn't bother with it last time I looked around for an exchange replacement.
Open-Xchange - http://www.open-xchange.com/header/community_area.html OpenGroupware.org - http://opengroupware.org/ Scalix - http://www.scalix.com/ Hope this helps, Lior Dvir Volk wrote:
Hi list, My company, a rapidly growing startup (right now about 15 employees, probably around 50 within a year), is looking to upgrade our current mail server to a full fledged Exchange or similar solution. Before we're surrendering to M$, I'd like to know if anyone knows of a full FOSS solution for our needs, possibly with someone to support it or at least install it and guide us, in Israel. our requirements are: Mail; Calendar sharing; PDA Access; Access to all features from Win (Outlook access is a must) , Mac and Linux; Web Access; and our own dedicated server. Any advice? Dvir ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
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