I recentlly migrated from SBS2003 to SBS2008. However, I ran DCPromo on 2003 before I had uninstalled Exchange and it is now causing issues with Exchange 2007 e.g. I can't upgrade to SP2 due to a Recipient Update Service issue.
Is there a way round this? is it possible to promote SBS2003 back to being a DC and then remove Exchange?