“You have installed Forefront TMG 2010, Exchange 2010 Edge role and Forefront Protection for Exchange (FPE) 2010 on the same machine. You do not want to use the Email policy configuration integration feature of Forefront TMG (in this case TMG won’t manage the Exchange Edge and FPE settings), in other words you have not executed the “Configure Email Policy” wizard in the TMG Management console…”
OK, I don’t know why anyone would want to do this, but I guess somebody does. In any event, you might see that the default receive connector on the Exchange Edge Server is disabled, even though you didn’t disable it.
If you’ve run into this problem, check out the TMG Firewall Team Blog over at:
DEBRA LITTLEJOHN SHINDER
MVP (Enterprise Security)