This document provides an overview of setting up a mail server on Linux. It discusses what Linux is and its features. It then describes the key components needed for a mail server, including Bind for DNS, Httpd for a web server, Dovecot for protocols, Postfix for accepting connections, and Squirrelmail for accessing the IMAP server. Instructions are provided on installing and configuring the necessary software packages to establish a functional mail server on a Linux system.

1. MAIL SERVER
ON LINUX

2. INTRODUCTION
WHAT IS LINUX ?
Linux is a Unix-like and mostly POSIX-compliant
computer operating system which is assembled
under the model of free and open-source
software
development and distribution.

3. LINUS TORVALDS
 First released on 5 October 1991 by Linus Torvalds.
 LINUX OS installation redhat.wmv

4. FEATURES OF LINUX
 Multi-tasking , Multi-processor & Multi-user
 Portable
 Scalability
 Reliability
 Security - Inbuilt Firewalls ( iptables )
 Biggest servers on this planet running linux
without single second downtime from last 10
years.

5. ARCHITECTURE

6. FILE SYSTEM HIERARCHY
 File system hierarchy standard defines the
directory structure in which all files and
directories appear under the root directory “ / “.

7. WHY TO CHOOSE LINUX?
 Low cost desktop OS.
 As a server platform
- performance
- price
 Extremely reliable as no reboots required in
450 + days .
 For developers
Resources – Linux has a tremendous numbers
of tools available for developers which are
free.

8. LINUX DISTRIBUTION

9. MAIL SERVER
 Electronic mail, commonly called e-mail, is a
method of exchanging digital messages from
one recipient to other recipients.
 A mail server is the computerized equivalent
of your friendly neighborhood mailman. Every
email that is sent passes through a series of
mail servers along its way to its intended
recipient

10. FEATURES OF MAIL SERVER
 Migration Simplicity
 Peripheral Tools
 Secured Login Methods
 Anti-virus protection
 Content security
 Ipv4 and Ipv6 support
 Tarpitting
 Anti-Hammering

11. WORKING

12. SOFTWARE REQUIREMENTS
 bind
 httpd
 dovecot
 postfix
 squirrelmail

13. Bind (for DNS configuration)
 BIND performs name resolution services through the /usr/sbin/named
daemon.
 BIND stores its configuration files in the following locations:
/etc/named.conf

14. Httpd (for WEB SERVER)
 The HTTP Configuration Tool allows you to configure the
/etc/httpd/conf/httpd.conf configuration file for the Apache
HTTP Server.

15. Dovecot (for protocols)
 The imap-login and pop3-login daemons which implement the
IMAP and POP3 protocols are included in the dovecot
package.

16. Postfix (for accepting
connections)
 Postfix provides a variety of configuration options, as well as
third party add ons that make it a very versatile and full-featured
MTA.

18. Squirrelmail
(for accessing IMAP server)
 SquirrelMail is an interface to your organization's email
system through the web.
 SquirrelMail is also highly customizable.

19. HOW TO USE ?
 Sending and Receiving Mails - mailserver.wmv
 How to use Plugins - working.wmv

20. CONCLUSION
 E-mail is an important part of any Web site,
and you need to plan its configuration carefully
to make it a seamless part of the Web
experience of your visitors. Without it, your
Web site won't seem complete.

21. REFERENCE
 www.linux.com –News , Software ,
Documentations and Tutorials .
 www.linuxhq.com –Another great Linux
resource site.
 www.linuxjournal.com –Monthly Linux
Magazine for Linux community.