Anti-spam system design based on improved DMTP undercloud computing platform
云计算平台下基于改进型DMTP的反垃圾邮件系统设计

This paper proposed an improved DMTP differentiated mail transfer protocol according to the problem that the SMTA intangible categorized in DMTP, and combined this improved DMTP with cloud computing. Then it designed an overall architecture of anti-spam system and described the work flow of mail delivery in the system in detail. By differentiating sender's category and integrating results from the cloud, the proposed system can effectively restrain the spam spread. Finally, it referenced an Eucalyptus-based anti-spam system.