I'm sorry if this is a newbie question, but I find with the Pay Pal app that an entry called "Callbackresponse" with a Pay Pal IP such as 173.0.81.65 or 173.0.81.33 ONLY seems to appear in the log when the order is unsuccessful or doesn't go through for some reason. Is that how it's meant to be?
All of our successfully processed orders do not have a callbackresponse appear in the logs at all.