Server Error

[mcelmac]

Hello, I have installed and configured Paypal Express checkout, but when I click on the Checkout with paypal button it returns a 500 http error like this

"The website encountered an error while retrieving https://************/ipn_main_handler.php?type=ec. It may be down for maintenance or configured incorrectly.

Here are some suggestions:
Reload this webpage later.

HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request."

Can someone please guide me in the right direction?

[dbltoe]

Couple of things.
Paypal's sandbox is not working right so make sure you aren't using that.
A 500 error should be discussed with your host.