If you haven't received anything from the ISP yet (in order to know what the postmark is) how can you blame the ISP? Perhaps it's in the mail and the USPS is to blame. That seems to be what a lot of people are running into. Is your blame mislaid? ISP said that they mailed 5000 on Friday. I guess I dont know when they mailed mine yet, but I was taking their word for it.