First, a summary of common email security architectures is presented, outlined, and criticized for various parameters. Second, we propose a technique for solving the problem of phishing emails by...

2023年2月2日 · Electronic mail, commonly known as email, is a method of exchanging messages over the internet. Here are the basics of email: An email client: This is a software program used to send, receive and manage emails, such as Gmail, Outlook, or Apple Mail.

E-Mail Architecture: Internet mail architecture consists of a user world in the form of Message User Agents (MUA), and the transfer world, in the form of the Message Handling Service (MHS), which is composed of Message Transfer Agents (MTA).

Figure 1 depicts the e-mail architecture and how e-mail works. E-mail de- pends on few primary protocols: SMTP (Simple Mail Transfer Protocol) [Jonathan B. Postel, 1982], POP3 (Post Office...

... see how collaborations are specified and used in D 2 AL, consider the class diagram for a simple e-mail system given in Fig. 2.1. In this design, an EMail object is separated from the...

Today's email systems are based on a store-and-forward model. Email servers accept, forward, deliver, and store messages. The structure of the E-mail address is username@domain name. An example of E-mail address is [email protected]. An E-mail address consists of two parts separated by @ symbol.

At the beginning of the Internet era, the messages sent by electronic mail were short and consisted of text only; they let people exchange quick memos. 1. Architecture. To explain the architecture of e-mail, we give four scenarios. We begin with the simplest situation and add complexity as we proceed.

2008年10月30日 · This article describes the high-level "architecture" of systems for handling Internet mail, and does not discuss the protocols used in a message transfer [Klensin08], the format of the messages [Resnick08], or any of the protocols and services at the "relay-level" of a mail handling system

These components are described in the following diagram: The first five lines of an E-mail message is called E-mail header. The header part comprises of following fields: The From field indicates the sender’s address i.e. who sent the e-mail. The Date field indicates the date when the e-mail was sent.

It describes the three main components: user agent, message transfer agent (MTA), and message access agent (MAA). The MTA uses SMTP to transfer messages between servers, while the MAA uses POP3 or IMAP4 for a user to retrieve messages from a server. Several email scenarios are presented involving different configurations of these components.