L. Egidi, P. Lova, and G. Porcelli (Italy)
Network Security, Personal Communication Systems, Spam e-Mail.
Many organizations that for their nature, or for budget con straints, choose to enforce a moderate level of security, re cently suffer from e-mail service disruption, caused by oc casional use of their mail exchangers as spamming engines, by intruders or by unscrupulous legitimate users. These events are tied to the current trend of using blacklists as anti-spamming defence. We propose in this paper an archi tecture whose purpose is to offer a low cost self-protection from such disruptions, with no impact on user habits nor on outside communication. It is an alternative to rate-limiting at the SMTP server that tends to reduce internal bandwidth consumption, moving the load onto the clients.
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