Web.config - PayPal IPN Listener - HTTP error code 500: Internal Server Error
问题 I am trying to get my PayPal IPN Listener to work on my Live environment, it works on Staging perfectly and the issue is something to do with the web.config file: (http://pastebin.com/B8YhJEZK) I am using "https://developer.paypal.com/us/cgi-bin/devscr" and the Instant Payment Notification (IPN) simulator to test the web service however I am getting the following: "IPN delivery failed. HTTP error code 500: Internal Server Error" 回答1: You might want to read this announcment from PayPal in