I am trying to repair a failed Exchange 2010 upgrade from Exchange 2003. I was brought into the project after the installation had failed, so I don't exactly know what went wrong or where the issue is. What I do know is that after the install failed (and broke email for our entire organization) they went back to 2003. We now have an Exchange 2003 server handling our email, and an Exchange 2010 server on the network, but not doing anything. As such, I want to scrap the "failed" install and start from scratch.
Before I do this however, I want to make sure that uninstalling Exchange 2010 will not affect our email in any way (it is imperative that email remains functional while I clean this up). In Exchange 2010, I checked and there are no send connectors, or anything like that. If I uninstall 2010, should I remove the AD changes or leave them in since, from what I understand, they did not cause the issue?
Exchange server info:
Windows Server 2008 R2 64Bit SP 1
Intel Xeon 3.06Ghz (4 core)
Exchange Server 2010
If anyone has uninstalled 2010 and run into any problems, or has done so with no problems, please let me know.