I am trying to get Paypal IPN to work. Everything seems to work fine in sandbox mode. Information is being passed back by paypal and I am able to see the details. When I switch the urls over to production. I get nothing. It doesn't even hit the server. I see nothing in the IIS logs. Just nothing. I can confirm that the urls are correct, etc. I have written my webhost to ask about blocked domains in the firewall, etc.
I just have no idea what else to look at
I am using Windows 2008. Code does not work using coldfusion or php examples.