Wednesday, September 30, 2015

MAIL Q & A PAGE - 1

                  MAIL INTERVIEW QUESTIONS AND ANSWERS 

                                            PAGE - 1



1..What is E-Mail?
Electronic mail transport has been one of the most prominent uses of networking
since networks were devised. Email started as a simple service that copied a file from one machine to another and appended it to the recipient’s mailbox file. The concept remains the same, although an ever-growing net, with its complex routing requirements  and its ever increasing load of messages, has made a more elaborate scheme necessary

2..Explain the meaning of mail message?
A mail message generally consists of a message body, which is the text of the message, and special administrative data specifying recipients, transport medium, etc, similar to what you see when you look at a physical letter’s envelope.

3..Explain the mail delivery process?
We will compose mail usinga program such as mail or mailx, or more
sophisticated ones such as mutt, tkrat, or pine. These programs are called mail user agents (MUAs). If you send a mail message, the interface program will in most cases hand it to another program for delivery. This is called the mail transport agent (MTA) Mail delivered over a network using TCP/IP commonly uses Simple Mail Transfer Protocol (SMTP)

 4..Explain the Mail routing process?

The process of directing a message to the recipient’s host is called routing. Apart
from finding a path from the sending site to the destination, it involves error checking and may involve speed and cost optimization.
On the Internet, the main job of directing data to the recipient host (once it is known by its IP address) is done by the IP networking layer.

5..What is the use of mailertable?

The mailertable feature adds support to the sendmail configuration for the
mailertable. The syntax of the mailertable feature is:FEATURE(`mailertable', `specification')

6..Explain the use of virtusertable?
The send mail virtue table feature adds support for the virtual user table, where virtual email hosting is configured. Virtual email hosting allows the mail server to accept and deliver mail on behalf of a number of different domains as though it were a number of separate mail hosts

 7..E-Mail function explain?

 Sending mail via SMTP (Simple Mail Transfer Protocol) and receiving mail from an ISP's POP (Post Office Protocol) server, you can use a desktop client like Netscape Communicator or KDE kmail. You will need to enter the names of the SMTP and POP servers in the preferences of the respective application, as well as your E−mail address (e.g., username@example.com), and your dial−up password. The same applies to Usenet News. Enter the name of the NNTP (Network News Transfer Protocol) server in your News client's preferences section. You may also have to provide the IP addresses of the ISP's primary and secondary name servers.

If you have a traditional MTA (Mail Transport Agent) like Sendmail, Smail, qmail,  You'll need to follow the instructions in each package. Basically, configuration entails determining which host machine, either on your local LAN or via dial−up Internet, is the ``Smart Host,'' if you're using SMTP. If you're using           the older UUCP protocol, then you'll need to consult the directions for configuring UUCP, and also make sure that your ISP's system is configured to relay mail to you.

8..What does mean an open mail relay server?
An Open mail relay server, means that this is a server that everyone can send emails through it without the need to identify first or be a part of the domain group

9..What is the purpose of an exim service on a server?

The exim service is an SMTP service that can replace the regular sendmail service that comes with the Linux installation

10..How can you check the mail queue of an exim mail server?
#  mailq

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