1. A computer implemented method operable to assign a reputation to a messaging entity associated with a received communication, comprising; receiving a communication from a first entity; deriving one or more attribute of the first entity based upon the received communication; analyzing the attributes associated with the first entity and based upon the received communication; retrieving known attribute information for a plurality of known entities; correlating the attributes of the received communication to the known attribute information; defining a relationship between the first entity and one or more other entities selected from the plurality of known entities based upon the first entity and the one or more other entities sharing at least one common attribute or common patterns of attributes; and attributing a portion of a first reputation associated with one of the first or the one or more other entities to a second reputation associated the other of the first or the one or more other entities based upon the defined relationship and said at least one common attribute or common patterns of attributes.