Hi, all mail to my domain just receives NDR 5.0.0 without any more detail. I have migrated to exchange 2010 from 2003, and it has worked fine until I tried to uninstall the old 2003 server. I have moved everything from the old server, but I believe that the OAB and Free/busy++ etc didn't replicate over.
I tried to uninstall, but it failed during, and now it is only partially installed... There are no routing group connectors anymore, wich I think is part of the problem. Try to create and get an AD-error "Name reference is invalid".
Little stuck here, and no incoming mail.....