Improving efficiency of e-mail communication via SPAM elimination using blacklisting
Tomáš Sochor, Radim Farana · 2013
Despite suggestions that the global ratio of unsolicited e-mail messages (SPAM) has been decreasing recently, the SPAM ratio values measured in individual SMTP servers have not confirmed this trend. Blacklisting can eliminate a part of SPAM even before their delivery. A multilevel anti-SPAM mechanism is described and the behavior and efficiency of blacklisting using DNSBL is analyzed. Drawbacks of DNSBL blacklisting and the potential of their elimination are discussed, too. The efficiency of DNSBL application in a specific mail server and its comparison to the efficiency of other SPAM blocking techniques is also presented.