White Papers

Throttling Outgoing SPAM for Webmail Services

Overview Spam has become a serious problem of Internet, and the current defense is limited to the filters deployed at the recipient side. Little known research has been applied to reduce the volume of spam messages being generated. This paper presents a system that dynamically throttles emails based on the message content at the Email Server Provider (ESP) side. The goal of this system is to reduce the spam generated by the ESP while not introducing long delay to legitimate messages. This goal is achieved by applying spam filters during the email delivery time and by using filter scores to control the throttling effect. The throttling effect is implemented through a computational puzzle system.

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Publisher: University of Georgia
File Format: PDF
Date Published: Jul 1, 2009
Format: White Papers
Topics: Spam - E-mail Fraud - Phishing, Network Security, Security Management

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