Book Image

Linux Email: Set up and Run a Small Office Email Server

By : Alistair McDonald, Carl Taylor, David Rusenko, Magnus Back, Patrick Ben Koetter, Ralf Hildebrandt
Book Image

Linux Email: Set up and Run a Small Office Email Server

By: Alistair McDonald, Carl Taylor, David Rusenko, Magnus Back, Patrick Ben Koetter, Ralf Hildebrandt

Overview of this book

<p>Many businesses want to run their email servers on Linux, but getting started can be complicated. The attractiveness of a free-to-use and robust email service running on Linux can be undermined by the apparent technical challenges involved.&nbsp; Some of the complexity arises from the fact that an email server consists of several components that must be installed and configured separately, then integrated together. Unlike other approaches that deal with one component at a time, this book gives you a basic knowledge across all the server components, leaving you with a complete working email server for your small business network.<br /> <br /> Based entirely on free, Open Source software, you will see how to protect your server from spam and viruses, offer web access for remote access, and secure your installation with regular backups.</p>
Table of Contents (14 chapters)
Copyright
Credits
About the Authors
Introduction

Downloading and Installing ClamAV


As viruses are being discovered on an almost daily basis it is well worth installing the latest stable version of ClamAV software. If your system is lucky enough to already have ClamAV installed it is possible that the installation may be based on an out of date installation package. It is highly recommended that you download and install the latest version from the ClamAV web site to ensure the highest level of security against viruses on your systems.

Requirements

It is necessary to install the GNU MP package to be able to verify digital signatures on the virus updates. This allows freshclam to verify the digital signatures of the virus databases. If freshclam was compiled without GMP support, it will display SECURITY WARNING: NO SUPPORT FOR DIGITAL SIGNATURES on every update. You can download GNU MP from http://www.swox.com/gmp/index.orig.html#DOWNLOAD.

Adding a New System User and Group

You will have to add a new user and group to your system for the ClamAV...