A few months back I asked a question about moving from a P2V'd Exchange 2010 box to a clean install of Server 2008 R2 and Exchange 2010. I have done it all and I think the connectors are all correct. However, when I shutdown the old exchange box I don't get any mailflow. And as soon as I fire it back up mail flows in with no issues.
Would I be correct in stating that I have to decommission the old server and then everything should be good mailflow wise or is there some other issue going on?