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(SOLVED) IPN Warnings

Posted: Thu Jan 11, 2018 8:14 pm
by Rainforest
I've looked at few forum posts but can't really pinpoint what the problem is.

I'm getting almost daily emails from Paypal on both my OC stores about :

Please check your server that handles PayPal Instant Payment Notifications (IPN). IPNs sent to the following URL(s) are failing

The URL I have is ... t/callback

I understand the above URL doesn't actually lead anywhere and that the OC Paypal Standard module actually takes care of the callback. However, I still get the message that the URL are failing.

In IPN history, I see a lot of "retry and then sent" for a few messages
So it seems to be working but it has to try the message once or twice.

Any ideas?
If I turn of IPN messages, I think my orders go to "missing" status.

Re: IPN Warnings

Posted: Thu Jan 11, 2018 9:08 pm
by paulfeakins

Re: IPN Warnings

Posted: Wed Jan 17, 2018 2:45 am
by Rainforest
No luck.
I did notice though that the your post suggests:


we had a slightly different one:


I changed it but I'm not sure if that will make a difference as either URL leads to a 404 since it's not a real page. It's my understanding you could put anything there but the module itself sets the callback url? Right?

Also, if anyone does virtual terminal payments or sends a payment link it will create this IPN error message

Re: IPN Warnings

Posted: Wed Jan 17, 2018 2:55 am
by Rainforest
Also, when looking at the IPN history...the messages that are "successfull" seem to have a different url than the one you suggest or the one I had.

The url is a

I changed it to that to see if it fixed the problem.

So far a test order came out successful.

Re: (SOLVED) IPN Warnings

Posted: Wed Jan 17, 2018 7:56 pm
by Rainforest
So, if anyone has this problem. Here is how I solved it:

1. Went into PayPal and into IPN History
2. Looked to see which IPN messages were successful and which were not.
3. Took the URL of the successful messages and put that as my callback URL (which happens to be totally different than the ones suggested by opencart)
4. Problem solved.