My issue is this, they already have a windows 2000 Domain Controller with Active Directory. When a new user is added they are added to the Active Directory and then separately to exchange 5.5. What I would like to know is how I can do the migration and add the properties of the exchange 5.5 users like email address forward etc... To the existing acitive directory accounts. The usernames on the 2 servers are the same. On 1/14/05 7:01 AM, "Michael B. Smith" <michael@xxxxxxxxxx> wrote: > underlying OS and it'll leave IIS in IIS5 > emulation mode and Exchange will "limp" (not run, but limp along). > > It's not supported. There are many things that fail. > > I experimented with this right after w2k3 was released...