By Guido Schryen
This booklet examines anti-spam measures when it comes to their potentials, obstacles, benefits, and disadvantages. those components ascertain to which quantity the measures can give a contribution to the aid of junk mail ultimately. It examines legislative, organizational, behavioral, and technological anti-spam measures, together with an perception into their effectiveness. moreover, it offers the conceptual improvement and research of an infrastructural e mail framework, which beneficial properties one of these complementary program, and considers deployment issues.
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Extra info for Anti-spam measures : analysis and design
Default should be “oﬀ”. Some procedures included in the “Anti-spam recommendations for SMTP MTAs” (and also in modern authentication methods, see Subsect. 4) rely on the availability and correctness of the DNS. For example, one of the recommendations is about verifying MAIL FROM domains with the DNS (assure that appropriate DNS information exists for the domain). When making use of this capability, there are two things to consider : There is an increased amount of DNS queries, which might result in problems for the DNS server itself in coping with the load.
17]. Independent of the exact cost, it seems legitimate to denote this cost as “negligibly low”. (2) SMTP was designed to work in an environment which is not susceptible to security attacks, such as are common and manifold on today’s Internet. In particular, the lack of accountability is a major technical reason as to why spam is such a problem. The security problems of SMTP which aﬀect spamming are discussed here in more detail. SMTP allows the spooﬁng of an addresser’s data and thereby allows anonymity, which makes it hard or even impossible for a recipient to detect the real sender: the host, acting as client, sends its FQDN with the HELO/EHLO command, this host name is often believed to be the real name and accepted for the Received entry by the SMTP server.
2 focuses on organizational measures and cooperation by inspecting abuse systems and international cooperation. Behavioral measures, such as the protection of e-mail addresses and the handling of received spam e-mails, are covered in Sect. 3. Finally, the largest branch of anti-spam measures, the technological ones, are discussed in Sect. 4. These include ﬁlters, blocking, and authentication mechanisms. Economic measures are closely linked to other measures, such as technological or behavioral measures.
Anti-spam measures : analysis and design by Guido Schryen