Patent ID: 8880611
Filing Date: 2014-11-04
Classification: H04L

Abstract:
1. A method for detecting spam, comprising: at a server system that executes spam detection software so as to classify an email message: accessing a message body of the email message; extracting a plurality of features of a return path existing in the message body, the return path for use by a recipient of the email to respond to a message in the email; generating a reconstructed return path from the plurality of extracted features of the return path existing in the message body of the email message, wherein the return path is a postal address, and the extracted features are postal address sub-features comprising a plurality of address components selected from the group consisting of: complete or partial street name, city name, state name, country name, street number address, postal code, designations for post office box, and post office box number; and classifying the email in accordance with at least the reconstructed return path; wherein extracting a plurality of return path features includes extracting a first postal address sub-feature that is separated from a second postal address sub-feature by one or more non-postal address terms in the message body.