[kh99]

Originally Posted by angemon

I looked at the code a little more and I believe that error message comes from paypal_gateway.php, which means you must be getting the IPN from paypal. When the IPN is received, the script connects to paypal and sends it back to verify it, and if that fails for some reason, you get authentification_failure. Unfortunately there isn't a lot more information. One thing it checks is the email address that you have when you set up paypal as a payment method, but since it was working before you went to https, unless you changed it, that's probably not it.

Any way to set up something like a .htaccess to allow access to just the payment_gateway.php via http? I'm not a server admin person so I don't know how hard that would be.

Edit: oh, actually, now that I think about it a little more, if you only have a few of those it could just be someone other than paypal accessing that script (I think I did it myself at least a couple of times). So maybe you still need to be looking at whether or not paypal is connecting to your server.