We are running Exchange 2010 SP3.  I have setup federation and it is working great.  We have one domain and forest.  Exchange is setup to run in two AD sites, one being a primary site and the second a DR site.  The federation certificate is installed on the CAS and mailbox servers in the primary site, however it is not installed in the DR site, the state is "Not Installed".  Any suggestions for getting the federation certificate to install on the servers in the DR site? &n