After reviewing the responses and comments I am at a loss what to do. As I understand the comments so far…
If Exchange 2007 was not happy with my SLD, why did it allow me to install it and move forward with my migration? It would have been advantageous to have Exchange 2007 post an error before I proceeded with the install, or even stop the install completely. Not all clients upgrade at every release. We find that the 4 to 5 years time frame is the normal upgrade times. I now have zero options. I cannot rename the domain because of “If Exchange 2007 has been installed into an organization containing Exchange 2003, or if you have already run the Exchange 2007 /prepare setup switches, you cannot perform a domain rename even if Exchange 2007 servers are removed from the organization. That is because Exchange 2007 setup creates new Active Directory objects which will not be properly renamed by the Exchange 2003 domain rename fixup script.” I have done this with 1 exception, I have an Exchange 2000
Where do I go from here? My client has trusted me to make the correct IT decisions for them and now I have placed my client in a position where they cannot upgrade because they their new mail server is incompatible with their old. Microsoft is now punishing my client for their desire to move forward with Exchange 2007. The amount of time spent on this already is absurd and nothing has been done to move the process forward.
Please help me to understand this situation and if I have misunderstood any of this, please respond.