With most integrations, the Configuration file is created when you do the configuration steps. The Configuration file contains, among other things, the connection parameters for DP to connect to the Exchange database. IN checking the Exchange 2010 documentation, I do not see this step
I also checked the documentation for Exchange 2003 and 2007 integration, also found nothing for this, so, I guess that this is an Exchange thing, unlike other integrations
So, I went back to the original error:
Could not get Exchange 2010 configuration file backups from cell server cellmanager
and checked lab cases, found one hit, but it was only for a missing error message (Bad Catalog Access), and was for DP 6.2 anyway
I also checked our KNowledgebase, and found nothing. You will need to open a case with the REsponse Center to have this analyzed and, if necessary, to have a fix supplied