A real time spam filtering method and system

Abstract

The invention relates to a filtration method of real-time junk e-mails, and the method is used for filtering a junk e-mail at a network interconnection point. The method comprises the following steps: step one, a path combination P is constructed according to the routing information in the e-mail, and the path combination P is a sending correspondent and a receiving correspondent, and / or a sending correspondent and an information destination; step two, attribute space mapping is performed to the IP address or the domain name of the elements in the path combination P according to IP address mapping or domain name mapping; steps three, whether the current e-mail is a junk e-mail is determined according to the attribute space mapping result of each element in the path combination P, if the e-mail is a junk e-mail, step four is executed, otherwise, the current e-mail is not processed; step four, the current e-mail is filtered. In the invention, only the mail order and the content in the header are analyzed, the processing speed is quick, the network resource utilization rate can be improved, and simultaneously, the filtration pressure at a user terminal can be relieved.

Description

technical field [0001] The invention relates to the field of emails, in particular to a method and system for filtering junk emails in real time. Background technique [0002] E-mail system is a successful example of Internet application, which brings great convenience to people's work and life, and enables people from different countries to cooperate conveniently and quickly. The e-mail system transmits information through the Simple Mail Transfer Protocol (SMTP), and the letters transmitted in it are generally called e-mail (E-mail). [0003] According to the SMTP protocol, the mail transmission process can be divided into three stages: sending, transmitting and receiving, as shown in Figure 1. [0004] Sending email client to the mail server is the sending phase: the sending mail client may be a legitimate user or a spammer, and they send the edited email to the sending mail server. [0005] The transfer of mail between the sending mail server and the receiving mail ser...

AI Technical Summary

Problems solved by technology

[0015] Since spammers can forge the path information of the mail, the usability of the receiving line information may be poor, which affects the accuracy of the filtering algorithm; in addition, this method requires a complete receiving line and marked sample data, which is difficult to apply Email traffic filtering during the transport phase

[0016] Although from the perspective of actual filtering effect, the solution based on the sending and receiving stages has significantly reduced the number of spam received by users, but the problem of spam occupying network bandwidth and wasting storage and computing resources has not been solved. Therefore, to solve the problem of spam Real-time filtering technology that can be applied to the mail transmission stage should be implemented in order to effectively improve the utilization of network resources and reduce the filtering pressure on the user end

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