paypal invalid ipn

[eluser]Khoa[/eluser]
Thanks for the quick response ray,

So why is the function ipn not called then? I noticed one thing. After a payment is made, I double check in both the buyer and seller accounts in the sandbox, there is a list of transactions at the bottom. Sometimes the transaction is said to be "Completed", sometimes it says "Unclaimed". Do you have any idea about it? Can this be related to the fact that I do not receive the ipn?

You said "it will be whenever the paypal server has a free moment to do it.", what do you mean by this? It sounds like you have some experience with the fact that Paypal delays the transactions, can you share?

If paypal does not process it instantly, is there any case that ipn function will be called at some later stage in the future? Like I buy sth in the morning, but it won't be processed until midnight and that's when the ipn function is called?

Sorry to have so many question, but to be honest, at this time, I don't really care, or more correctly, don't have time to care about how paypal works, I just need to get this work asap. I will be in BIG BIG trouble if I cannot get this done by this christmas :-( Is there any way I can contact you directly to ask for your help on this? Like emailing you directly?

Thanks ray.