IPN Failure

Hi,

I have IPN settings configured correctly in PayPal account - in PayPal the IPN is successful sometimes, and fails/retries other times. Return URL correct as it does work sometimes and approve a registrant.

The IPN log in Paypal advises HTTP response code: 500

I have checked ipn_logs.txt (located in /components/com_eventbooking ) and for the transaction ID there are the same number of entries in the LOG file as the the PayPal number of retries.
For each entry for the transaction ID in the LOG file it returns

--
[07/15/2014 12:05 PM] - SUCCESS!
IPN POST Vars from Paypal:
***TRANSACTION INFO***
IPN Response from Paypal Server:
HTTP/1.1 200 OK
***TRANSACTION INFO***
VERIFIED

---

Based on this log Paypal is communicating to the server.. But somewhere something is going wrong, PayPal thinks the IPN is failing, and the website is not approving/publishing registrations.

Any ideas?

Hi Michael

If sometime Paypal IPN fail, sometime IPN works, I am afraid of something is wrong with your server. Maybe sometime your server down when Paypal send IPN message to your site ? That's the only reason I can think of for now. Maybe you can monitor the system and get back to me right after this issue happens again so that I can check IPN logs to see what's wrong

Tuan

I had this problem, and what I discovered was that Paypal had recently added some IP's to handle IPNs. It so happened that those IPs were on my blocked list from dealing with previous problems of spammers/hackers. I unblocked those IPs and the problem was solved. You do not know what IP Paypal will use for there IPNs, so you may want to look at that.