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 basic lan topologies, What are the basic LAN topologies? ...

What are the basic LAN topologies? The three simple LAN topologies that are combined to shape any practical topology are called as basic LAN topologies. They are, Bus Topology

Broadcast domain and collision domain, Explain Difference between broadcast...

Explain Difference between broadcast domain and collision domain? Ans) Broadcast Domain Send the packet to all the Present Network IT might be send by the person It mig

Hierarchy of dns servers application layer , Hierarchy of DNS Servers ...

Hierarchy of DNS Servers DNS uses a large number of server organized in hierarchical  fashion  and distribution  around the world. No single DNS server has all  of the  mappin

Cipher password guess-cryptography, a. If a password to a cipher is exactly...

a. If a password to a cipher is exactly 8 characters long, and each character can be selected from [0-9], [a-z], and [A-Z], how many different passwords are possible? b. Suppose

Key features of spontaneous networking, QUESTION a) Give a detailed exp...

QUESTION a) Give a detailed explanation of the following: Some dynamics systems can be built as variations on the client server model. b) Give one main drawback of the "Thin

Example of wan technologies, Some multiple WAN methods are defined below: ...

Some multiple WAN methods are defined below: ARPANET: It start in 1960's. It was operated by Advanced Research Project Agency, which is a company of US defense department.

Describe about radio waves, Radio Waves - Frequency ranges: 3 KHz to 1...

Radio Waves - Frequency ranges: 3 KHz to 1 GHz - Omni directional - Susceptible to interference by other antennas utilizing same frequency or band - Ideal for long-di

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