Server 2003 and Exchange 2000

According to the Microsoft people I have spoken with, Exchange 2000 is fully supported on 2003 Server. It should integrate with the AD without a problem and work just the same as with 2000 Server.

Good luck!

No ,it is not supported and will not be supported on W2K3.
I have been to the W2K3 boot camps and they devote more than a few minutes on the topic.

W2K3 "Gotchas" fom W2K news .The editor "borrowed" almost verbatim a lot of what I said in a feedback letter,but hey, as long as he gets it right.

1)IIS6 will only run on W2K3. MS admits that IIS5 was buggy, slow and full of security holes, but if you want to fix it, you HAVE to upgrade the whole OS, not just the app. Just like how IIS5 isunique to W2K, IIS6 is unique to W2k3. And yes IIS6 is by far the best version of IIS that has been released yet.

2)Exchange 2000 will not run on W2K3. Exchange 2K is supported in a W2K3 environment, but it must be run on a W2k server. See the MS KB:
http://www.w2knews.com/rd/rd.cfm?id=030421RN-Exchange_2K
3)SQL 2000 will run on W2K3, but -only- if you apply SP3. Reference:
http://www.w2knews.com/rd/rd.cfm?id=030421RN-SQL_2000
4)The statement that the free terminal services licenses that worked on W2K Server that came with XP Pro do not work on W2K3 is true...to a point.

As we all know MS has changed their licensing model greatly since the release of W2K. With the release of W2K3, people will really start to get a feel for how much this is really going to cost them. The link below has MS's licensing information for W2K3, at the bottom they touch on the TS licensing a little. If you currently have Windows XP deployed you have a little good news. Be prepared to shell out for some new CALs. Reference:
http://www.w2knews.com/rd/rd.cfm?id=030421RN-TS_Licenses

Be aware that the process of upgrading AD might be painful. It looks like the fixes in AD synchronization can only be achieved by going to AD on W2K3. It sure would have been nice had they made the AD a modular product that could be upgraded on W2K server.