troubleshooting Question

Outbound SMTP issues in Exchange 2007

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coolsport00Flag for United States of America asked on
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I noticed in my queue viewer I have a lot of messages not being sent, and the error associated with each msg is: "421.4.2.1 Unable to connect" and/or "A local loop was detected". I just upgraded to 2K7 from 2K and am having a HOST of issues with this. We still have our 2K server in production until we get our SMTP issues resolved (and to assist in clients being able to be redirected from the old server to the new fairly seamlessly). Can someone assist me in getting my queued msgs to be able to send? When I initially upgraded, all was fine. I had send connectors that seemed to have transferred from my old server. I then created a send connector on my new one and that may have been the beginning of all of my issues. As always, any assistance is greatly appreciated! Thanks.
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