The purpose of the Domain Rating Servers is to provide rating information about email addresses and/or domains. The specific implementation is too early to define. Overtime, the Spammers will be be forced to provide valid authentication key with their email address.

When this happens, the market can develop a strategy to handle it. A Domain Rating Server, general or specific to a provider, will be developed as we learn more about the behavior of the Spammer in the new technology.