http://blogs.technet.com/ukmail/default.aspxThe Reading Eighteenen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/ukmail/archive/2008/09/24/step-by-step-guide-on-failing-over-from-ccr-to-scr.aspxWed, 24 Sep 2008 17:15:00 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3127759ukpfemc0http://blogs.technet.com/ukmail/comments/3127759.aspxhttp://blogs.technet.com/ukmail/commentrss.aspx?PostID=3127759http://blogs.technet.com/ukmail/rsscomments.aspx?PostID=3127759There's a very good TechNet article available that describes the steps that are required in order to fail over from a CCR cluster in one site, to an SCR target in another site. It also covers the procedure to fail back once the problem has been resolved....(<a href="http://blogs.technet.com/ukmail/archive/2008/09/24/step-by-step-guide-on-failing-over-from-ccr-to-scr.aspx">read more</a>)<img src="http://blogs.technet.com/aggbug.aspx?PostID=3127759" width="1" height="1">CCRSCRFailbackFailoverhttp://blogs.technet.com/ukmail/archive/2008/07/29/mail-routing-with-a-single-namespace-during-migration-co-existence.aspxTue, 29 Jul 2008 17:44:00 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3095297ukpfemc0http://blogs.technet.com/ukmail/comments/3095297.aspxhttp://blogs.technet.com/ukmail/commentrss.aspx?PostID=3095297http://blogs.technet.com/ukmail/rsscomments.aspx?PostID=3095297I've been spending quite a lot of time looking at mail routing options using a shared namespace - not something most people tend to do, however quite important in this case :-) I found some information at MSExchange.org that helps clarify the routing...(<a href="http://blogs.technet.com/ukmail/archive/2008/07/29/mail-routing-with-a-single-namespace-during-migration-co-existence.aspx">read more</a>)<img src="http://blogs.technet.com/aggbug.aspx?PostID=3095297" width="1" height="1">co-existencesingle namespaceroutingmigrationexchange 2007