E-mail communication security
Jaromir Hrad, Ivan Pravda
Annotation

The course provides an overview of the basic principles of email communication in the context of the most used protocols SMTP, IMAP and POP3 and focuses on the possibilities of securing such communication. Email communication can be secured by using SPF records in the DNS system and implementing the DKIM standard. Finally, the module discusses SPAM scores and blacklists.

Objectives

By studying the module, students will gain an overview of the basic principles of e-mail communication. The properties of the protocols used for e-mail transmission (SMTP, IMAP and POP3) are explained. The structure of SMTP servers is described in detail. Subsequently, the implementation of security using SPF records in the DNS system is explained, as well as the use of the DKIM standard for verifying the identity of the e-mail sender. Finally, students will learn about SPAM scores and blacklists.

Keywords
Email, security, SMTP, IMAP, POP3, SPF record, DKIM, spam, blacklist.
Date of Creation
18.10.2024
Language
English
License
Creative Commons BY-SA 4.0
ISBN
Literature
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  1. IETF. RFC 9441, Domain names - concepts and facilities. November 1987.
  1. IETF. RFC 1034, Domain names - implementation and specification. November 1987.
  1. Online. IANA. Domain Name System (DNS) Parameters. 2023, 2023-10-19. Available from: http://www.iana.org/assignments/dns-parameters. [feeling. 2023-10-21].
  1. IETF. RFC 854, Hypertext Transfer Protocol -- HTTP/1.1. June 1999.
  1. IETF. RFC 7540, Hypertext Transfer Protocol Version 2 (HTTP/2). June 1999.
  1. IETF. RFC 7540, HTTP/3. June 2022.
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  1. IETF. RFC 2821, Simple Mail Transfer Protocol. August 1982.
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