> The documentation from Microsoft for win2000/exchange2000 is good doc. > It is my understanding that Exchange 2000 will not work on server 2003. > you will have to wait for exchange 2003 to run it on win 2003. That is incorrect. Exchange 2000 SP3 will run on Windows Server 2003 NON-DC fine, as long as the AD is based on a Windows 2000 Server. You can not install Exchange 2000 anything on anything if the AD is a Windows Server 2003 domain. Recap: Exchange 2000 SP3 on Windows Server 2003 is fine if AD DC(s) is(are) Windows 2000 Servers. John Tolmachoff MCSE CSSA Engineer/Consultant eServices For You www.eservicesforyou.com