You can contact email@example.com. There should be a message signature that you can provide in addition to the sending IP address. With this information they will be able to update the scores. Please include all relevant information about the message, sometimes they need that to fully evaluate the request.
IP, message signatures, URL and file reputation all are part of GTI. The IP and signature parts have always been there, the URL part and file reputation part are new, I belive in 7.5.