Invalid Paypal IPN Response

Question

Can any body tell me what is error in the following paypal ipn response

Failed Response = HTTP/1.1 200 OK Date: Fri, 09 Mar 2012 10:47:38 GMT Server: Apache X-Frame-Options: SAMEORIGIN Set-Cookie: cwrClyrK4LoCV1fydGbAxiNL6iG=HsLFg9XOmQSJyuFKrL6PkJjTED9fh4Zde3UysJ1YnQ1xmilNeg-Y_zLU2wud8XLDahMpf5S7P120pyejIXzBLm%7chW7sdV0qGBjVkzRfcV539j-CN30UarIFBdY8vcVDymTOAxGTgqxzsM2Bz0ulxMIf5UFURW%7c1331290058; domain=.paypal.com; path=/; HttpOnly Set-Cookie: cookie_check=yes; expires=Mon, 07-Mar-2022 10:47:38 GMT; domain=.paypal.com; path=/; HttpOnly Set-Cookie: navcmd=_notify-validate; domain=.paypal.com; path=/; HttpOnly Set-Cookie: navlns=0.0; expires=Thu, 04-Mar-2032 10:47:38 GMT; domain=.paypal.com; path=/; HttpOnly Vary: Accept-Encoding Connection: close Transfer-Encoding: chunked Content-Type: text/html; charset=UTF-8 7 INVALID 0 ??

Answer 1

I had the same problem. My problem was: I sent a call from the Sandbox Instant Payment Notification (IPN) simulator to my real account. It always came back as INVALID. After trying to send it to the sandbox server, it worked! I think paypal works like this is for security reason. I hope my thing works when all credentials are live.

Answer 2

The IPN response of INVALID means that you have not provided the EXACT data, to the server the IPN was sent from, as what was sent to you by that server.