In todays world it is impossible for a working individual to stay away from the Internet
. We have to use emails in order to keep in touch with people. In order to be able to send emails, one needs to install an SMTP server. They help one to send bulk emails without any problem either on the senders or the recipients side.
An SMTP server helps in the quick and efficient delivery of emails to the recipients mail box. Generally the client servers use SMTP only for sending mails and for receiving the emails they use a POP (Post Office Protocol) or an IMAP (Internet Message Access Protocol) or some such proprietary system.
The increase in the number of Internet frauds and hacking has made it important that people turn to secure SMTPs. Since they use TLS/SSL encrypted channels therefore they are able to provide enhanced email security. Also, one does not need to remain confined to a specific location to be able to send emails as a secure SMTP is location independent.
For companies who have a number of clients to deal with and communicate, thousands of emails have to be sent daily. So, they find it very useful to have an SMTP server of their own to quicken the process as they do not have to depend on a third party server for sending emails. For those who are using the Red Hat version of the Linux operating system can install an SMTP server on their system using the in-built tools.
In order to install a Linux server you have to have MySQL, Courier IMAP and Postfix. There are a number of configuration options on Linux and most of them do not have to be changed while configuring Postfix. All you need to specify is the domain and the server name, restrictions on access and how Postfix will access data from MySQL server. The stability of Linux has made Linux SMTP servers a common choice for those who are planning to run a mail server.
When you set up a server make sure that it is tested before you begin to use it. It is necessary to test it rigorously in order to avoid a host of troubles later on when the server will be in full use. This test has to be repeated every time changes are made in the server. So, a smart move would be to make a test plan and to use it every time it is needed.