Design And Realize Of Anti-Spam Arithmetic

As for email user, spam is no longer a strange thing. Generally speaking, spam means one electronic mail, which mainly includes commercial or political publicizing content, is sent to lots of diverse mail users by one person at same time. Receiving such mail usually, mail users will feel quite fed up. On the other hand, tons of spam can even disorder the normal usage of Email. Therefore, in this essay, email structure, SMTP agreement will be explained. Besides, some anti-spam technologies will be analysed also, which include IP black and white list, connection frequency determination, domain name counter-check, Naive Bayes filtering, rough collection and DNA. These calculation principles facilitate the achievement details of Naive Bayes calculation and anti-spam techonologies such as HTML formula matching. Details are showed below:1) Introduction of situation of anti-spam technology and countermeasure nowadays.2) Introduction of email system and analysis of the utility of anti-spam technology.3) Achievement of some kinds of detail technologies, including words divided syncopation technology, email format analyze, achievement of Na(?)ve Bayes calculation, HTML formula matching and dynamic black and white list.4) An anti-spam gateway system structure is figured out according to these calculation achievements.