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随着网络技术的发展,垃圾邮件日益猖獗,因此,众多邮件过滤技术也应运而生.介绍邮件内容过滤技术,并就内容过滤需要解决的难题进行探讨. 相似文献
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企业内部网(Intranet)上电子邮件的广泛使用和Internet的发展,使得企业普遍存在内外电子邮件系统互连的需求,但实现过程中普遍存在不安全、成本高等问题.为了实现企业内外邮件系统安全可靠的互连,我们提出了基于中间件的Intranet和Internet邮件系统互连的解决方案. 相似文献
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Abstract With the growth in population and development of business activities in Hong Kong, the range and level of services provided by Hongkong Post have multiplied. However, the schedule of its postal vehicles, including mail collection and delivery, is still constructed manually on a daily basis, based on the experience of staff and transportation reviews. In this paper, the problem of scheduling a set of n collection points (District Post Offices) from a depot (General Post Office) in Hong Kong Island is addressed. The objectives pursued are the maximization of resource utilization and minimization of operation costs. In other words, the variable cost is expected to be reduced. To achieve these goals, an integer linear programming (IP) model of the vehicle routing problem (VRP) is developed in an effort to obtain optimal solutions. As the model involves computational complexity, a commercial software package CPLEX is used to solve the problems efficiently. The results show that the proposed model can produce optimal vehicle routes and schedules. 相似文献
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安全电子邮件系统的设计与分析 总被引:5,自引:0,他引:5
分析当前电子邮件在安全方面的隐患,设计一种既能实现端到端的电子邮件安全通信又能在传输层建立安全隧道的电子邮件系统,详细介绍了安全电子邮件系统基于PKI体系实现加密、数字签名、身份认证等部分的设计思路。最后对此系统的安全性加以分析,并与PGP及反垃圾邮件系统进行比较。 相似文献
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以删除“Homepage”病毒邮件为例,介绍了利用Outlook规则删除有固定模式的邮件病毒的方法。 相似文献
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