I have 2 queues in my Exchange 2007 Edge Transport server with the message: 450 4.5.0 No recipient succeeded I have checked reverse lookup for our domain and that works fine. I have tried telneting to the recipients server and sending a message that way and it works fine. I have tried sending the same recipient an email from ma Hotmail account and that works fine also. All other mail flows perfectly in and out of the server. But for some reason, messages sent to this recipient is stuck in the edge transport server. Any clues as to how I can resolve this would be very gratefully recieved. Paul
