We are using Windows 2003/IIS 6.0, and trying to use authorize.net as the payment gateway (ASP based script). During the test, when sending the payment info on secure.authorize.net after clicking "Submit payment", it gives the following error:
403 Access Denied Access to the requested resource has been denied. We suspect you are using an automated process to access this website. Please retry with a regular browser.
Looking at the transfer log, it shows that the error happens when authorize.net's site trying to return to our website's script that process the result.
Does anyone has any idea what's wrong? Authorize.net claims that it's the webserver's setting. Someone mentioned to me that the webserver is configured to prevent access by machines, rather than actually real web users. What does this mean if this is actually the cause? Where do I have to start looking since I am new to this kind of stuff?
What integration method are you using for your application?
I.e. SIM or AIM?
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