Fri Feb 1 03:09:15 UTC 2013
Hi, We are planning to "go commercial" and enable DCC Reputation checking on our mail routers. However I am still unclear on the meaning of this setting: "option threshold rep,20%" The language describing it says: "To choose a reputation threshold, consider the Mail with DCC Reputations graphs. The narrow band of yellow, pink, blue and red shows that most IP addresses have DCC Reputations that are either <1% or >60%. It makes little sense to use DCC Reputation filtering with a threshold below about 10% or above 60%. 40% or 50% is conservative threshold and 20% is somewhat aggressive. " So does it mean that if you pick 40%, that the IP is 40% bulk and 60% non-bulk? What does it do with this threshold? It doesn't appear to be a cutoff since I still see mail on my test server scoring in the lower bands.
More information about the DCC