HowtoForge - Linux Howtos and Tutorials - Anti-Spam/Virus

Installing ClamAV 0.93.3 From The Sources (+ Sendmail Integration) On CentOS 5.2

Thu, 31 Jul 2008 15:04:01 +0200

Installing ClamAV 0.93.3 From The Sources (+ Sendmail Integration) On CentOS 5.2

This how-to refers to the installation and configuration of Clamav 0.93.3 (from sources) on a Linux server running CentOS 5.2 and sendmail. We assume the fact you’ve installed sendmail from the rpm packages of your distribution.

A Simple Mailserver On Arch Linux (Postfix + Dovecot)

Thu, 24 Jul 2008 15:10:49 +0200

A Simple Mailserver On Arch Linux (Postfix + Dovecot)

This tutorial describes how to install a complete mailserver using Postfix and Dovecot on an Arch Linux machine or VPS. This specific tutorial is based on my 256MB VPS. Basic linux knowledge is required as I'm not describing every step in detail.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.04 LTS)

Tue, 20 May 2008 18:13:58 +0200

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.04 LTS)

This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota (quota is not built into Postfix by default, I'll show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

The Perfect SpamSnake - Ubuntu 8.04 LTS

Thu, 01 May 2008 18:45:36 +0200

The Perfect SpamSnake - Ubuntu 8.04 LTS

This tutorial shows how to set up an Ubuntu Hardy Heron (8.04 LTS) based server as a spamfilter in Gateway mode. In the end, you will have a SpamSnake Gateway which will relay clean emails to your MTA. You will also be able to view your incoming queue, train your SpamSnake and carry out a few more advanced operations via MailWatch.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Mandriva 2008.1)

Sun, 13 Apr 2008 19:35:31 +0200

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Mandriva 2008.1)

This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I will also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.

Virtual Users And Domains With Postfix, MailScanner, Mailwatch & MySQL On CentOS 5.1

Thu, 06 Mar 2008 17:59:58 +0100

Virtual Users And Domains With Postfix, MailScanner, Mailwatch & MySQL On CentOS 5.1

This document describes how to customize Falko's "Virtual Users And Domains" - setup for CentOS 5.1 so that it works with MailScanner and Mailwatch. The resulting system provides a web interface (Mailwatch) where you can manage quarantined emails, train SpamAssassin, edit the white- and blacklist, view configuration files and the detailed MySQL database status ...

Virtual Hosting Howto With Virtualmin On CentOS 5.1

Sun, 02 Mar 2008 18:34:44 +0100

Virtual Hosting Howto With Virtualmin On CentOS 5.1

This tutorial shows how to set up a CentOS 5.x server to offer all services needed by virtual web hosters. These include web hosting, smtp server with (SMTP-AUTH and TLS, SPF, DKIM, Domainkeys), DNS, FTP, MySQL, POP3/IMAP, Firewall, Webalizer for stats.

How To Implement Domainkeys In Postfix Using dk-milter

Fri, 01 Feb 2008 16:53:59 +0100

How To Implement Domainkeys In Postfix Using dk-milter

Domainkeys is "DomainKeys is a method of e-mail authentication. Unlike some other methods, it offers almost end-to-end integrity from a signing to a verifying Mail Transfer Agent (MTA). In most cases the signing MTA acts on behalf of the sender, and the verifying MTA on behalf of the receiver. DomainKeys is specified in Historic RFC 4870, which is obsoleted by Standards Track RFC 4871, DomainKeys Identified Mail (DKIM) Signatures." according to the wikipedia. So why a how to on it when there is DKIM ? Well domainkeys is still actively being used and is more widely deployed than DKIM, the developer Yahoo still uses it to sign and verify mail although they are contributers to the DKIM standard.

Set Up Postfix DKIM With dkim-milter

Wed, 30 Jan 2008 17:18:02 +0100

Set Up Postfix DKIM With dkim-milter

DKIM is an authentication framework which stores public-keys in DNS and digitally signs emails on a domain basis. It was created as a result of merging Yahoo's domainkeys and Cisco's Identified Internet mail specification. It is defined in RFC 4871.

Mailscanner/Exim Gateway With Communigate PRO Guide

Fri, 25 Jan 2008 15:25:50 +0100

Mailscanner/Exim Gateway With Communigate PRO Guide

In this tutorial we will be installing and setting up Mailscanner as a mail firewall in front of a Communigate pro cluster. This tutorial has been written for the CENTOS 5.x Linux distro but am sure it can be used for any other Linux based system with little modifications. The system will run with SELinux in enforcing mode.

Virtual Users And Domains With Postfix, Courier And MySQL (Mandriva 2008.0)

Sun, 13 Jan 2008 18:16:05 +0100

Virtual Users And Domains With Postfix, Courier And MySQL (Mandriva 2008.0)

This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota (quota is not built into Postfix by default, I'll show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses.

Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 6.06 LTS)

Thu, 10 Jan 2008 12:38:10 +0100

Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 6.06 LTS)

Virtual Users And Domains With Postfix, Courier And MySQL (CentOS 5.1)

Sun, 09 Dec 2007 17:56:04 +0100

Virtual Users And Domains With Postfix, Courier And MySQL (CentOS 5.1)

Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 7.10)

Thu, 22 Nov 2007 17:29:59 +0100

Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 7.10)

Adding And Updating SpamAssassin Rulesets With RulesDuJour

Wed, 21 Nov 2007 11:24:39 +0100

Adding And Updating SpamAssassin Rulesets With RulesDuJour

This article explains how you can download additional SpamAssassin rulesets resp. automatically update these rulesets with a shell script called RulesDuJour. These additional rulesets can increase your spam recognition rate dramatically. Most of the rulesets that RulesDuJour supports can be found on the SA Rules Emporium web site.