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

Enumerate about the home page and hot links, Enumerate about the Home Page ...

Enumerate about the Home Page and Hot Links Home Page: The primary Web page for an individual or organisation. These pages link to other related pages. Hot Links: A co

What is tcp/ip, TCP/IP is a name provided to the collection (or suite) of n...

TCP/IP is a name provided to the collection (or suite) of networking protocols that have been used to construct the global Internet. The protocols are also referred to as the DoD (

State the specification of high-end server, State the specification of high...

State the specification of high-end server A mid-range or high-end server with the following specifications would be sufficient for a medium to large organisation: A Pentiu

What are the concerns of the physical layer, What are the concerns of the P...

What are the concerns of the Physical Layer? Physical layer coordinates the functions needed to transmit a bit stream over a physical medium. a. Physical characteristics of in

What is lrc, What is LRC? In LRC, a block of bits is separated into row...

What is LRC? In LRC, a block of bits is separated into rows and a redundant row of bits is added to the whole block. It can detect burst errors. If two bits in one data unit ar

Sate 802.11 architecture, 802.11 Architecture ESS (Extended service set...

802.11 Architecture ESS (Extended service set) two or more BSSs with APs connected through a distribution system (wired LAN) in an infrastructure network

Error correction in burst error correction, Q. Error Correction in Burst Er...

Q. Error Correction in Burst Error Correction? Error Correction-Burst Error Correction In its place of sending all the bits in a data unit together we can organize "N

Calculate the voltage on the capacitor, Quetion: A 22 nF capacitor is i...

Quetion: A 22 nF capacitor is initially charged to 10V. It is then discharged by connecting a 100kW resistor across it. Approximately how long does it take for the voltage on t

What is bens network, Q. What is Bens Network? It's a non-blocking netw...

Q. What is Bens Network? It's a non-blocking network. It's a special type of Clos network where first and last stage consists of  2×2 switches (for n input  and m output networ

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