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jwolthuis - 7:05 pm on Jul 27, 2007 (gmt 0)
Depends on when they process the recurring payments, and how many "subscribers" you are dealing with. If they process each recurring payment the second that it expires, then the IPN model is a great feature to have. If they process several hundred at a time (as a batch), I'm thinking several hundred simultaneous IPN's might do bad things to my site. When does PayPal send the IPN? At midnight, or at the precise time of the renewal?
What should happen is the processor should debit the credit card and send an immediate notification to the web site. I have a customer that is searching for this ability and we're finding none.