title: paypal sandbox IPN notification url not responding
body: <p>I am implement Paypal standard payment in my site. I have a resource to receive notification when user issue a subscription and update data base in-order to tracking the sale and user payment. I do accidentally change the notification resource on my site which mean making it stop working. Is there any setting with paypal to alert me by email once user successful check out and notification url stop working?</p>