My IPN: http: //: 85 / has a user port. This url works fine, but paypal always gives me errors on its simulator and does not call my IPN when paying.
What can cause this problem?
Below are the steps to enable IPN in the PayPal sandbox.
Update settings ....
An IPN listener needs to listen on the standard port for http (80) or. https (443), otherwise it will not work ... This is not indicated in the documentation, and it does not make sense, so it is rather confusing!
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