17. The method of claim 11 , wherein the method further comprises the step of: when the reputation score is better than a second predefined threshold, performing a second specified action associated with responding to messages that are not unsolicited, wherein the first predefined threshold is different from the second predefined threshold.
17. The method of claim 11 , wherein the method further comprises the step of: when the reputation score is better than a second predefined threshold, performing a second specified action associated with responding to messages that are not unsolicited, wherein the first predefined threshold is different from the second predefined threshold. 20. The method of claim 17 , wherein the step of performing the second specified action comprises performing one or more filter operations on the message.