Soldato
You have a few options: You could do it for free (assuming you have already registered you domain name) with Linux. Free but not easy but very customizable and capable of doing much more (web server and so on)
If you wanted a calendar server, mail server, wiki server, web server and streaming media server with unlimited client access licenses all wrapped up in an easy to use front end you could go for an Apple XServe (quiet down you lot) as these represent very good value for money (2k) and integrate into AD and at the edn of the year are getting full push mail and calendar and Exchange support.
Or you could play it safe and get Exchange. Nothing wrong with this and Exchnage 2007 is a very good product but it does tend to have a lot of associated costs.
Personally I'd avoid SBS as it has to many limits for a growing business and puts far to many eggs in one basket. If you want Exchange then please do it properly.
If you wanted a calendar server, mail server, wiki server, web server and streaming media server with unlimited client access licenses all wrapped up in an easy to use front end you could go for an Apple XServe (quiet down you lot) as these represent very good value for money (2k) and integrate into AD and at the edn of the year are getting full push mail and calendar and Exchange support.
Or you could play it safe and get Exchange. Nothing wrong with this and Exchnage 2007 is a very good product but it does tend to have a lot of associated costs.
Personally I'd avoid SBS as it has to many limits for a growing business and puts far to many eggs in one basket. If you want Exchange then please do it properly.