Verifying ipn data more than once. Is that ok?

mickleham_walt
Contributor
Contributor

Hello, I am implementing an ipn listener. On receiving an ipn message from Paypal, the message is sent back to Paypal to be verified that it actually came from Paypal. I have my listener working up to this point, and do receive the verification from Paypal.

 

Now, to keep the ipn listener responsive, I am offloading the back-end work to another script. However, I would like the back-end script to again verify that the original ipn message came from Paypal.

 

Is it ok to have the original ipn message, from Paypal, verified twice?

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