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Method and System for Improved Spam Discrimination Disclosure Number: IPCOM000021447D
Original Publication Date: 2004-Jan-19
Included in the Prior Art Database: 2004-Jan-19

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A program is disclosed which uses the "Received:" lines which document the path that a piece of e-mail takes from its sender to its receiver as part of a spam discrimination mechanism (which could be Bayesian classification or any other method), but only those "Received:" lines which provide information about the path of the e-mail before its final entry into the receiving enterprise. A system which ignores all "Received:" lines cannot take advantage of information indicating that a piece of e-mail may have been routed through known spam relay systems (or, conversely, that all of the steps in the path are known to be well-behaved systems). A system which uses all "Received:" lines can be confused in its analysis by using information about systems within the enterprise, even though that information is of no value in making a determination whether an e-mail is spam or not.