I am attempting to do the same thing, multiple domains running zencart tied to a single paypal account.
Whe in paypal profile, if you activate the instant payment notification, it won't activate until you enter a notification url...
but if you are sending payments from several url's how can you enter only one? and there is no allowance for multiple url's.
if this notification url is handled in the zencart code, what gets entered in the paypal profile so that the IPN function will allow you to save it as activated?
or are you saying that anything entered in the notification url on the paypal profile will be overridden by what is present in the zencart code that described the specific url involved in that specific transaction and properly return to the correct url.
Best Regards
Prodesk



