Français
2. A brief reminder of the SMTP protocol
For a proper understanding of the techniques discussed in this file, a few brief reminders about e-mail exchanges are in order.
In an electronic message exchange architecture, there are two types of component (see figure 11 ):
MTA (Mail Transfer Agent): server for routing emails in the transit network (e.g. ISP networks, corporate networks);
MUA (Mail User Agent) – also called UA (User Agent) –: end-user mail client (e.g. Microsoft Outlook, Mozilla Thunderbird, etc.).
Note that the last MTA responsible for delivering the email to the MUA is also sometimes called the MDA (Mail Delivery Agent).
Dialogue between MTAs takes place...
The Ultimate Scientific and Technical Reference
This article is included in
Security of information systems
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
A brief reminder of the SMTP protocol
Spam prevention and detection
Bibliography
- (1) - HOFFMAN (P.) - Unsolicited Bulk Email : Definitions and Problems. - Internet Mail Consortium (1997). http://www.imc.org/ube-def.html
- (2) - WIKIPEDIA - Spam – Wikipedia, the...
Also in our database
Information systems security base
Regulations
Directive 2002/58/EC of the European Parliament and of the Council of 12 July 2002 concerning the processing of personal data and the protection of privacy in the electronic communications sector (Directive on privacy and electronic communications) (OJ L. 201, 31 July 2002, pp. 37-47).
Standards and norms
Internet Engineering Task Force (IETF)
- Simple Mail Transfer Protocol - RFC 2821 - 2001
- Post Office Protocol – Version 3 - RFC 1939 - 1996
- Internet Message Access Protocol – Version 4rev1 - RFC 3501 - 2003
- Internet Message Format - RFC 2822 - 2001
- Multipurpose Internet Mail Extensions (MIME) Part One : Format of Internet Message Bodies - RFC 2045 - 1996
- Multipurpose Internet...
Directory
Organizations – Federations – Associations
Internet Engineering Task Force (IETF) http://www.ietf.org/
Website
The avatars were created with the : http://www.sp-studio.de/sp-studio.swf
The Ultimate Scientific and Technical Reference
