Basic functions of e-mail system, Computer Network Security

Basic functions of e-mail system are given as follows:

Composition refers to the procedure of creating messages and the answers. Though any text editor can be used for the body of the message, the system itself can give support with addressing and the numerous header fields attached to each message.  For example, when answering the message, the e-mail system can extract the originator's address from incoming e- mail and automatically put in it into the proper place in the reply.

Transfer It refers to the moving messages from the originator to the recipient. In large part, this  requires  establishing  the  connection  to  the  destination  or  any  o9f the intermediate  machine, outputting the message, and releasing the connection. The e-mail system should perform this automatically, without bothering and disturbing the user.

Reporting:  It has to perform with telling the originator what happened to the message. Was it delivered or is still pending? Was it rejected or accepted by the person? Was it lost due to some reasons? Number of applications exists in which confirmation of delivery is significant and may even have legal significance (''Well, Your Honour, my e-mail system is not very much reliable, so I guess the electronic subpoena just got lost somewhere'').

Displaying incoming messages is required so the people can read their e-mail. Sometimes conversion is needed or a special viewer should be invoked, for instance, if the message is a PostScript file or the digitized voice. Easy conversions and formatting are sometimes attempted as well.

Disposition is the last step and concerns what the recipient does with message after receiving it. Possibilities contain throwing it away before reading, throwing it away after reading the content, saving it, etc. It must also be possible to retrieve and reread the saved messages, forward them, or process them in the other ways.

Additionally to these basic services, some of the e-mail systems, especially internal corporate ones, provide a variety of advanced features. Move or when they are away for some time,  they  may  desire  their  e-mail  forwarded,  so  the  system  must  be  able  to  do  this automatically.

Most systems permit users to create mailboxes to the store incoming e-mail. Commands are required to create and destroy mailboxes, check the contents of mailboxes, insert and delete messages from the mailboxes, and so on.

Corporate  managers  frequently  require  to  send  a  message  to  each  of  their  customers, subordinates, or suppliers. This gives rise to the idea of the mailing list, which is a list of e-mail addresses. When the message is sent to the mailing list, alike copies are delivered to everyone in the list.

Other advanced features are carbon copies, high-priority e-mail, secret (i.e., encrypted) e-mail, blind carbon copies, alternative recipients if the primary one is not presently available, and the ability for secretaries to read and reply their bosses' e-mail.

Posted Date: 7/20/2012 5:38:33 AM | Location : United States







Related Discussions:- Basic functions of e-mail system, Assignment Help, Ask Question on Basic functions of e-mail system, Get Answer, Expert's Help, Basic functions of e-mail system Discussions

Write discussion on Basic functions of e-mail system
Your posts are moderated
Related Questions
Who are the individuals who cause these security problems? Many unauthorized people who cause network security problems for obtaining information about the other users and causi

Question: (a) Distinguish between a mobile agent "state" and "code". (b) Differentiate between "weak" and "strong" mobility. (c) Mobile agent systems are known to have

Attacker's Motives behind the Cyber Attack Before adapting the necessary measures to deal with the problem, understanding and evaluating the blogger's psyche and his motivation

Problem (a) As a forensic investigator, you are needed to trace the source of an email. It is suspected that the email header has been forged. Show how you would proceed to

Assume that a security model is needed for the protection of information in your class. Using the CNSS model, examine each of the cells and write a brief statement on how you would

The key concepts and frameworks covered in modules 1-4 are particularly relevant for this assignment. Assignment 2 relates to the specific course learning objectives 1, 2 and 3:

a) Calculate the CRC for the frame below: Frame: 1101011011 Generator: 10011 Message after appending 4 zero bits: 11010110110000 b) OSI refers to a system in which any

What is Authentication/confirmation?  How it is different from  the Authorization/approval?  Explain in brief different authentication protocols along with their merits and demerit

Innovative nature of triple key management The triple key management scheme provides secure services by combining different techniques whic contribute to the security and priv

RISK ASSESSMENT Risk assessment is a step in a risk management technique. Risk assessment is the determination of quantitative or qualitative value of risk related to a concrete