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

Merit and drawback of mpi, Merits of MPI Runs on any shared or dist...

Merits of MPI Runs on any shared or distributed memory architectures; Can be used on a wider range of troubles than OpenMP; Every process has its own local variabl

State the network environment of intranets and internet, State the Network ...

State the Network environment of Intranets and Internet Intranets as well as the Internet are based purely on networks, the company intending to install Intranet must consider

Mips instruction - set and explain the restrict pipelining, 1.  Consider th...

1.  Consider these two potential additions to the MIPS instruction set and explain how they would restrict pipelining. a)  cp d1(r1), d2(r2) copy contents of word at address

Tunnelling - point to point, Tunnelling To guarantee privacy for the  o...

Tunnelling To guarantee privacy for the  organization, VPN specifies that each IP datagram destined for private  use of the  organization, must  first be  encrypted and then en

Define virtual channel, Virtual channel is normally a link from one source...

Virtual channel is normally a link from one source to one destination, although multicast connections are also allowed. The other name for virtual channel is virtual circuit.

State about transcontinental ?ber, State about transcontinental ?ber A ...

State about transcontinental ?ber A transcontinental ?ber link may have many gigabits/sec of the bandwidth, but latency will also be high due to speed of light propagation abov

Describe the architecture of the tcp/ip protocol suite, Problem 1 Descr...

Problem 1 Describe the architecture of the TCP/IP protocol suite Problem 2 Describe the principle of operation of REXEC protocol Problem 3 Describe the concept

What is sliding window, What is Sliding Window? The sliding window is a...

What is Sliding Window? The sliding window is an abstract method that explains the range of sequence numbers that is the concern of the sender and receiver. In other words, he

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