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自从互联网普及以来,电子邮件逐渐成为人们生活中便捷的通信手段之一。然而,随之产生的垃圾邮件像瘟疫一样蔓延,污染网络环境,占用大量传输、存储和运算资源,影响了网络的正常运行。业内人士分析:一旦垃圾邮件占到互联网总数据流量的三分之一以上,将会造成巨大的存储需求,甚至对信息安全系统的有效性构成威胁。对垃圾邮件的定义至今还没有一个比较明确的描述,然而它们的诸多表征已经得到了业界人士广泛的认可,例如:垃圾邮件通常是未经收件人主动请求又无法拒收的、大量的邮件内容相似并且隐藏或伪造发件人身份、地址、标题信息等。垃圾邮件的内容形
Since the popularization of the Internet, e-mail has gradually become one of the most convenient means of communication in people’s lives. However, the resulting spam spread like a plague, polluting the network environment and taking up a lot of transmission, storage and computing resources, affecting the normal operation of the network. Analysis of the industry: once the spam accounts for more than one-third of the total data traffic on the Internet, will result in huge storage needs, and even the effectiveness of information security systems pose a threat. There is no clear definition of spam. However, many of their representations have been widely recognized by the industry. For example, spam is usually unsolicited and can not be rejected without the request of a recipient. A large amount of mail Similar content and hide or forge the sender’s identity, address, title information and so on. Spam content shape