I have been using Paypal IPN for some time, but I changed some things, and now the header just contains. HTTP/1.1 400 Bad Request What would be the cause of this? Thanks/
Hello, Are u check in IPN using sandbox testing method or it live transaction. Further more you can check out below thread... http://www.pdncommunity.com/pdn/board/message?board.id=ipn&message.id=3625
yeah, I'd like to see at least a portion of the code I'm sure that we'd be able to help you better with a little more information.