hey pathfinder, I realized this was where my wires were getting crossed.
I thought that the hash passed back on the relay response was the same
as the one I had sent in the payment form request.
I have the same setup as you pbloom. We used to use AIM which gives you
instant feedback and since you are the one making the call to the
Auth.Net you know that the response is coming is valid. I have an open
question to the forum, which I hope gets ...