For several weeks now PayPal is retying, for each online payment, to send the IPN to my website. I get the PayPal info in the backend but no automatic registration happens for each new user. (cfr forum ticket #200323)
In the PayPal Instant Payment Notification (IPN) details I see now HTTP response code
500 and is retrying to send the IPN untill PayPal times-out (around 15 reties).
I used following method to try to find the issue:
1) briefly turned site debug on
2) error reporting -> maximum
3) accessed the site using the IPN url that failed and that is in Paypal account in History -> IPN History.
In the CBSubs backend "CB Paid Subscriptions: Notifications" I get for test;
- Log Type = IPN notification not authenticating at payment gateway
- Verification = INVALID
- Gateway account = On-line payment
I don't see any errors, just a blank white screen.
This should mean there are no problems BUT on the PayPal IPN details screen I get an HTTP response code 500!!
I use also an events registration system on the same website via PayPal, without any problems at all.
I'm realy lost here!!.
Are there other ways to dive into this problem and try to find a resolution?
> 3) accessed the site using the IPN url that failed and that is in Paypal account in History -> IPN History.
that's not enough, you also need to POST the variables listed in the field above or below the link at Paypal IPN history. Otherwise CBSubs can't give the payment reference to Paypal, nor verify successfully with Paypal that the IPN is authentic. That's why you get the INVALID verification result.
or alternatively (that's how i found last time that you had a third-party plugin that gave an error making the paypal IPN fail), you can use
jsfiddle.net/
and write your form there. I replaced each name=value pair of paypal by NAME:<input name="NAME" value="VALUE" /> (using a regexp-replace in an editor).
Then just use the RUN button of jsfiddle, and press the submit button i added to the form.
beat
