Mail message format - application layer, Computer Networking

Assignment Help:

Mail Message  Format

When an e mail  is sent from one person  to another  a header containing peripheral information precedes  the body  of the message itself. This contained  information is contained in a series of header lines. The header liens and  the body of the message are separated by a blank line. Each header line contains readable ext consisting of a keyword followed  by  a colon  followed by value. some  of the  keyword  are required and others  are optional. Every header  must have  a from header line and  a to header line  a header may include a subject header line as  well as other  optional header liens  a message header looks like this.

The to field  gives the  address  of the primary recipient. Having multiple recipients is also  allowed. The  cc field gives  the addresses of any secondary recipients. In  terms  of  delivery  there is  o distinction  between  the primary and secondary recipients. The  terms cc ( carbon copy0 is a bit dated  since computers do not use cardoon paper but it is well established. The  Bcc( Billed carbon copy) field is like the cc field except that this  line  is deleted from all the copies  sent to the primary and secondary recipients. This feature  allows people  to send copies to third parties without the primary and  secondary recipients knowing this. The next two  field from and sender tell who wrote and sent  the message  respectively. A line containing  received is added by each message transfer agent along  the way. The  lien contains the agents identify the date and  data and time the message was received and other  information that can be used for finding  bugs in the routing  systems. The return path field is added  by the final message  transfer agent and was intended to tell how to get back  to  the sender.

 


Related Discussions:- Mail message format - application layer

What are the key functions of data link layer, What are the key functions o...

What are the key functions of data link layer? Data link layer transfers data in a structured and reliable manner so that the service given by the physical layer is utilized by

Show the character-level encryption, Q. Show the Character-level Encryption...

Q. Show the Character-level Encryption? - Substitutional - Monoalphabetic - simplest form; also called Caesar cipher - Every character is replaced with another character

What are the possible ways of data exchange in ccna, Normal 0 f...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What are the trends in network security, Q. What are the trends in Network ...

Q. What are the trends in Network Security ? Trends in Network Security Improved vigilance for virus infections Continual maturation of firewall technologies

Describe the meaning of wan technologies, Question 1: a. What is xDSL a...

Question 1: a. What is xDSL and enumerate the benefit of such a technology? b. Name some of the typical applications of xDSL and the different types and standards of xDSL.

What is nic - networking, NICs Network interface cards, commonly referr...

NICs Network interface cards, commonly referred to as NICs are used to connect a PC to a network. The NIC gives a physical connection among the networking medium and the comput

Introduction to operations research, explain the three classification of op...

explain the three classification of operation research

Transmission robustness and security, Transmission robustness and security ...

Transmission robustness and security Unless properly designed, a wireless LAN might be interference prone and simply eavesdropped. The design of a wireless LAN must allow relia

Configure ip settings for the linksys wrt300n- ccna, Configure IP Settings ...

Configure IP Settings for the Linksys WRT300N The best way to understand the following settings is to think of the WRT300N as being same to a Cisco IOS-based router with two di

Plot way forms for the modulation schemes, Plot way forms for the following...

Plot way forms for the following modulation schemes using Mathlab: a) 2 ASK   4 ASK                       b)  BFSK     4 FSK                             c) BPSK 4

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd