%0 Conference Proceedings %T Fighting Spam on the Sender Side: A Lightweight Approach %+ Faculty of Electrical Engineering, Mathematics and Computer Science, Design and Analysis of Communications Systems (DACS) %A Vries, Wouter Willem %A Moura, Giovane Cesar Moreira %A Pras, Aiko %< avec comité de lecture %( Lecture Notes in Computer Science %B 16th EUNICE/IFIP WG 6.6 Workshop on Networked Services and Applications - Engineering, Control and Management (EUNICE) %C Trondheim, Norway %Y Finn Arve Aagesen; Svein Johan Knapskog %I Springer %3 Networked Services and Applications - Engineering, Control and Management %V LNCS-6164 %P 188-197 %8 2010-06-28 %D 2010 %R 10.1007/978-3-642-13971-0_18 %Z Computer Science [cs]/Digital Libraries [cs.DL]Conference papers %X 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. %G English %2 https://inria.hal.science/hal-01056498/document %2 https://inria.hal.science/hal-01056498/file/024_llncs_28Full_Version_29_v3.pdf %L hal-01056498 %U https://inria.hal.science/hal-01056498 %~ LORIA2 %~ IFIP-LNCS %~ IFIP %~ IFIP-LNCS-6164 %~ IFIP-TC %~ IFIP-TC6 %~ IFIP-WG6-6 %~ IFIP-EUNICE %~ IFIP-2010