Content-based E-mail Filtering System

With the rapid development of network technology, e-mail technology becomes more maturity, and its applications are more and more extensive. In recent years, along with e-commerce and e-government system the rise, more and more enterprises use e-mail as a unit of employees between the company and the exchange of information between the companies an important tool. The e-mail transmission of information in the use of the process inevitably involving whether the contents of the e-mail will cause leakage problems, and in some cases, the units will be used to send messages to all staff by a unified way to manually check and send to ensure information security, one of the biggest disadvantages of doing so is to make quick and easy e-mail features greatly reduce, how to ensure that e-mail does not affect the speed of the premise and guarantee the content of the message will not damage the unit of information security is e-mail in the enterprise application is an urgent need to solve a problem.The proposal for this issue, combined with increasingly sophisticated e-mail filtering system, this paper presents a combination of e-mail address and e-mail message content filtering technologies to provide systems audit and audit of a combination of artificial means to resolve the issues raised above.Based on this, this thesis, the current popular e-mail filtering technologies: blacklist filtering technology, rule-based filtering technology, statistics-based filtering technology, the final combination of workflow technology to realize a prototype of an e-mail filtering system, mainly including the following functions: According to the e-mail address to send and receive filtering, based on sensitive word filtering, manual audits, including audit functions include manual workflow-based e-mail audit process to achieve.