PRESENTATIONE-MAIL SYSTEM AND HOW IT WORKS

PRESENTED BY: DANIYAL KHAN

ADEEL AWANSYED NASIR ALI

WHAT IS AN E-MAIL?

Email is a short form of Electronic mail.

It is defined as Transmission of messages over communication

networks.

WHAT IS AN E-MAIL SYSTEM?

It is similar to the traditional mail system with post boxes, post offices, envelopes and

addresses. The difference is that here messages are

sent electronically to other computer users via

Internet.

One can send computer

documents, graphics, software or anything else

that can be turned into a digital form

attached to an email message.

Message needs to be converted into a digital form and forwarded to a computer that acts as a

mail server or post office.

Basic Parts of the E-mail System

Clients software Message store Message transport Management System Gateways

Client SoftwareClient software is a user interface that allows users to read and send messages. It shows the list of all of the messages in mailbox by

displaying the message headers that shows who sent the mail, the subject of the mail and may also show the time and date of the

message and the message size.

Message StoreA Message Store can exist in

more than one place at the same time. Its best to keep all email in one main Message Store on the

server.

Message TransportMessage Transport

Agents (MTAs) are software systems that keep moving

messages along to the

intended destination.

Management SystemManagement software is used to

create user mailboxes, to maintain address lists and routing

information, and to monitor message traffic. 

GatewaysGateways are needed only if a message must be translated in order to travel from a private

email system to another, or to the public Internet mail system.