一种透明邮件过滤模型研究与实现

垃圾邮件的猖獗对反垃圾邮件技术提出了更高的要求。目前反垃圾邮件网关模型单一，可扩展性和跨平台性都比较差。本文针对这种情况提出了一种透明的反垃圾邮件网关模型。这种模型与企业网络的邮件服务器相互独立。而且它能够有效的利用目前以及将来出现的反垃圾邮件技术，具有良好的可扩展性。文章首先介绍了邮件以及反垃圾邮件技术，然后介绍了这种透明模型的实现，并分析了其性能上的优势与弱点，最后提出了在将来工作中需要进一步加强研究的方面。

Study and Implementation of A Transparent E-mall Filter System

The rampant junk mails are challenging the technology of anti-spam. Now, anti-spam systems have simplex gateway module, with less extensibility. In this article, a transparent e-mail filter system is presented. This model is interrelate with e-mail server. Also,it is able to apply the anti-spam technologies both at present and in the future, and it has good extensibility. This article first shows e-mail and anti-spam technologies, and then present the implementation of the transparent model and the advantage and disadvantage of the performance. Finally, the future jobs to be paid attention to are introduced.