PayPal IPN Instant Payment Notification Warning from PayPal

Posted: January 08, 2018 at 2:41 PM Quote #198903
Does anyone know the correct URL for the PayPal IPN for nopCommerce 4.00 using PayPal Direct Checkout?

Currently I have https://shop.phredinstruments.com/Plugins/PaymentPayPalDirect/IPNHandler


https://shop.phredinstruments.com is my website URL

Thanks!

-Freddy
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Posted: January 16, 2018 at 11:50 AM Quote #199319
Here's the message from PayPal

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

https://shop.phredinstruments.com/Plugins/PaymentPayPalDirect/IPNHandler

If you do not recognize this URL, you may be using a service provider that is using IPN on your behalf. Please contact your service provider with the above information. If this problem continues, IPNs may be disabled for your account.

Thank you for your prompt attention to this issue.

Thanks,

PayPal

--------------
Anyone have any idea what could be?
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Posted: February 11, 2018 at 2:17 PM Quote #200501
So, I still haven’t resolved this issue. Not sure of the approach to take. Anyone have any insight into how to troubleshoot this?  

PayPal IPN was working ok in nopCommerce 3.80.

Seems like something may have changed in 4.00?
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Posted: June 13, 2018 at 6:10 PM Quote #205709
We're running version 3.6 and have been for a few years with no issues and now suddenly PayPal has sent us the IPN warning. We have changed nothing so can anyone tell me why it has stopped working? Have Google changed their policies so it no longer works with the 3.6 Nop IPN URL or is there something else I need to check?
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Posted: June 14, 2018 at 8:04 AM Quote #205733
PayPal will stop using plain HTTP for IPN from June 30th. Only HTTPS will be supported after this date. They are currently in the phase of switching over to HTTPS for some hours at random times as a warning for all who are not aware of this change.
Maybe you are observing this phenomenon.

https://www.paypal-notice.com/en/IPN-Verification-Postback-to-HTTPS/
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Posted: June 14, 2018 at 5:18 PM Quote #205786
Thank you Libor. I will get SSL set up on the website and see if that remedies the problem.
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