Electronic mail - Computer networks

Electronic MailComputer Networks

Prepared By:-Rishabh RJ

Electronic Mail

One of the most popular Internet services is electronic mail (e-mail).

The designers of the Internet probably never imagined the popularity of this application program.

Its architecture consists of several components that we discuss in next slides.

Topics to be discussed• User Agent• Architecture• E-mail address

E-mail in Computer Networks By Rishabh RJ

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User Agent

Some examples of GUI-based user agents are Eudora, Outlook, and Netscape.

E-mail in Computer Networks By Rishabh RJ

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Architecture

We will study four scenarios in Electronic mail Be attentive and have a look

E-mail in Computer Networks By Rishabh RJ

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First Scenario in E-mailWhen the sender and the receiver of an e-mail are

on the same system,we need only two user agents.

E-mail in Computer Networks By Rishabh RJ

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Second Scenario in E-mailWhen the sender and the receiver of an e-mail

are on different systems, we need two UAs and a pair of

MTAs (client and server).E-mail in Computer Networks By Rishabh RJ

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Third Scenario in E-mailWhen the sender is connected to the mail server

via a LAN or a WAN,we need two UAs and two pairs of MTAs (client and

server).E-mail in Computer Networks By Rishabh RJ

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Fourth Scenario in E-mailWhen both sender and receiver are

connected to the mail server via a LAN or a WAN,

we need two UAs, two pairs of MTAs and a pair of MAAs.

This is the most common situation today.

E-mail in Computer Networks By Rishabh RJ

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E-mail Address

This is the building of your email address

E-mail in Computer Networks By Rishabh RJ

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I will love to answer your questionsAny Questions?Thank you

Mr. RishabhSchool of Engineering and TechnologyShoolini UniversityVillage Bajhol, Solan (H.P)

[email protected]

E-mail in Computer Networks By Rishabh RJ

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