Upload
daniyal-khan
View
45
Download
1
Embed Size (px)
Citation preview
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.