Callback from Paypal - Cloudflare Problem

[microtribe]

I'm trying to solve a problem using Cloudflare with VM. Some Paypal transactions don't get confirmed. I'm assuming this is a caching problem because some transactions do get confirmed. I was asked if the callback from PayPal goes to a certain location so I can set up a page rule to not cache that location. Can someone tell me if there is one callback location for every transaction, or is each one unique?

By the way, this is not the IP error that requires mod_cloudflare to be installed on the server. That is already installed and working. Thanks.

[GJC Web Design]

IPN calls always go -> http://www.xxxx.xxx/index.php?option=com_virtuemart&view=vmplg&task=notify&tmpl=component......

don't know if you can allow partial urls

[microtribe]

Thanks John!