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paypal IPN notice url changed agin in
Total Posts:  43
Joined:  2008-12-15

I’m having the same problem with “mc_gross”. Sometimes it’s sending the wrong value to PayPal and then Magento classifies the order as “Suspected Fraud"… Anybody found the cause and solution?

Filo - 31 March 2011 09:44 PM

I was having this error of “Suspected Fraud” when testing with the Paypal sandbox.  I noticed that the field I was sending “mc_gross” did not match my order total in Magento. I changed this to match and resent the IPN and eveything worked fine. the order was moved to processing.
Have a look at the file app/code/core/Mage/Paypal/Model/Standard.php to see which IPN fields are important to Magento.  The function ipnPostSubmit() cares about mc_gross and payment_status=="Completed".
You could temporarily modify this file to get more debug. Make sure debug is turned on for Paypal. Goto System>Configuration>Paypal and in the tab Website Payments Standards Setting make sure Debug Mode is “Yes”
The order comment history also gives information.  Go to admin>sales>orders and pick an order and look at the history.
I was seeing comments like

1 Apr 2011 06:51:15Suspected Fraud |Customer Notified
"Completed"Order is suspended as its capture amount â‚¬0.00 is suspected to be fraudulentTransaction ID"541545".
The successful comment looks like this
1 Apr 2011 07:16:37|Processing
Customer Notification Not Applicable
"Completed"Registered notification about captured amount of â‚¬0.66Transaction ID"541545".
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This article might help solving the error:

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