I can honestly say that my head is officially spinning in trying to figure out my Paypal setup for osCommerce version 2.3
I have read that ipn.php should be found in /catalog/ ..... well, guess what, I don't see a file by that name there. Then I'm seeing references to \catalog\includes\modules\payment\paypay_ipn.php files .... well, guess what, I don't see a file by that name either.
So I'm hoping that someone can provide me a doc, a link or something that FULLY explains the setup of Paypal Standard on osCommerce version 2.3.1
Thanks,
Doug