What Notification URL is Used for Retrying IPN Messages?

[DogDad2010]

I can't find an answer anywhere:

When an IPN is "retrying" will it attempt to resend to the original notification URL or to any new URL added since message failure?

To clarify:

When an IPN message fails, and the status is "retrying", what URL will the resent messages go to?

Will the failed IPN continue retrying to send to the original notification URL configured prior to the first failure?

Or if you change the notification URL while a failed message is retrying, will the next attempt try sending to the updated URL?

Curious minds want to know...

[MTS_Jennifer · Accepted solution]

Hello @DogDad2010 ,

Thank you for posting to the PayPal Community.

https://developer.paypal.com/api/nvp-soap/ipn/IPNOperations/#resend-ipn-messages

PayPal sends the message to the same URL to which the original message was sent, which is not necessarily the current profile URL.

Normally the IPN will be attempted 16 times over a few days. After the IPN has been attempted 16 times with no success, the IPN will be marked failed, and all further attempts will stop.

Here is information on testing an IPN listener:

https://developer.paypal.com/api/nvp-soap/ipn/IPNTesting/

Thank you,

Jennifer

MTS

PayPal

[DogDad2010]

Thank you for the clarification @MTS_Jennifer !

That's unfortunate as it makes IPN troubleshooting a bit more difficult...