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de Vries, W.W. and Moreira Moura, G.C. and Pras, A. (2010) Fighting Spam on the Sender Side: A Lightweight Approach. In: Proceeings of 16th EUNICE/IFIP WG 6.6 Workshop (EUNICE 2010), June 28-30, Trondheim, Norway. pp. 188-197. Lecture Notes in Computer Science 6164/2010. Springer Verlag. ISBN 978-3-642-13970-3
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Official URL: http://dx.doi.org/10.1007/978-3-642-13971-0_18
Spam comprises approximately 90 to 95 percent of all e-mail traffic on the Internet nowadays, and it is a problem far from being solved. The losses caused by spam are estimated to reach up to 87 billion yearly. When fighting spam, most of the proposals focus on the receiver-side and are usually resource-intensive in terms of processing requirements. In this paper we present an approach to address these shortcomings: we propose to i) filter outgoing e-mail on the sender side and (ii) use lightweight techniques to check whether a message is spam or not. Moreover, we have evaluated the accuracy of these techniques in detecting spam on the sender side with two different data sets, obtained at a Dutch hosting provider. The results obtained with this approach suggest we can significantly reduce the amount of spam on the Internet by performing simple checks at the sender-side.
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