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 is error detection, What is Error Detection? What are its methods? ...

What is Error Detection? What are its methods? Data can be corrupted during transmission. For reliable communication errors must be deducted and corrected. Error Detection uses

Configure the physical topology- ccna, Configure the Physical Topology ...

Configure the Physical Topology Step 1: Cable the network. Refer to the figure and table below for the essential cables. Step 2: Physically connect lab devices. C

Physical configurations sonet sdh , Physical Configurations Transport ...

Physical Configurations Transport signal multiplexer de multiplexer. It either  signal from multiple   sources into a STS singles  or de multiplexes and STS signal  into diffe

Explain how contract net works, Question 1 Contract Net Protocol is the...

Question 1 Contract Net Protocol is the best known and most widely used cooperation protocol Explain how contract net works Discuss the benefits and limitations of con

Define some solutions of security, What is Security solutions Though t...

What is Security solutions Though there are a number of security solutions available due to sophistication in technology, there are a number of risks and difficulties attached

What are the drawbacks of arcnet, What are the drawbacks of ARCNet? Her...

What are the drawbacks of ARCNet? Here are some drawbacks of ARCNet: 1.  Standard ARCNet is very slow (2.5 Mb/s). It is almost seven times slower than Token Ring. 2.  ARC

Dotted decimal notation, Dotted decimal representation is a syntactic form ...

Dotted decimal representation is a syntactic form the IP software uses to express 32-bit binary numbers when communicating with humans. Dotted decimal presents every octet in decim

Common syntax of openmp, Q. Common syntax of OpenMP? Every OpenMP direc...

Q. Common syntax of OpenMP? Every OpenMP directive begins with #pragma omp. The common syntax is   #pragma omp directive-name [Set of clauses]  where omp is an OpenMP key

Fundamental of network , Fundamental of Network The  concept  of netw...

Fundamental of Network The  concept  of network  is not  new. In simple  it means an interconnected set  of some  objects. For decades we are familiar with the radio,  televi

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