| 摘要 |
In one aspect, the present invention is directed to a method for identifying and blocking spam email messages at an inspecting point, the method comprises the steps of: measuring the flow rate of email messages sent from an originator through the inspecting point; and if the measured flow rate exceeds a given threshold, email messages transmitted from the originator are classified as spam and/or the originator is classified as a spammer. In another aspect, the present invention is directed to a system for identifying and blocking spam email messages at an inspecting point, the system comprising: a spam detector, for classifying an email message as spam-suspected; a flow rate calculator, for calculating a flow rate of spam-suspected email messages that have reached the inspecting point; a spam indicator, for classifying spam-suspected email messages as spam by their flow rate and a threshold thereof.
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