I build a shop for one of my customer. Now this shop receives 300-400 small orders each day. Many orders are done through paypal. I am using paypal ipn latest version but have a big problem which is a real issue when receiving so many orders; I know that we can not prevend a customer closing the paypal window after payment has been made. But there must be a way that directly after paypals displays the screen where it confirms that the payment has been made the shop also receives a message for this payment. The IPN notification is only send when customer goes back to the shop. There must be something that can be done about this because manual check of all payments is impossible. Hope someone can help.