Tag Archive for SMTP

How does Email work?

Protocols used in email transfer

This post gives a basic overview of the theory of operation of Electronic Mail (Email). It also explains the different components of an electronic mail system like User Agents (UAs), Mail Transfer Agents (MTAs) and Mail Access Agents (MAAs).

Role and Types of Application Layer Protocols

Two broad categories of application layer protocols based on whether they use TCP or UDP

This post gives a brief overview of the role of application layer protocols. It also gives a brief overview of the different methods of classification of application layer protocols like network service based classification or peer relationship based classification.