Postfix

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Set Up Ubuntu-Server 6.06 LTS As A Firewall/Gateway For Your Small Business Environment

Set Up Ubuntu-Server 6.06 LTS As A Firewall/Gateway For Your Small Business Environment 

This tutorial shows how to set up a Ubuntu 6.06 LTS server ("Dapper Drake") as a firewall and gateway for small/medium networks. The article covers the installation/configuration of services such as Shorewall, NAT, caching nameserver, DHCP server, VPN server, Webmin, Munin, Apache, Squirrelmail, Postfix, Courier IMAP and POP3, SpamAssassin, ClamAV, and many more.

Autoresponders to accompany Virtual Users and Domains with Postfix, Courier and MySQL

Autoresponders to accompany Virtual Users and Domains with Postfix, Courier and MySQL

This guide focuses on making Yaa! (Yet Another Autoresponder!) work with Debian Sarge and the virtual users on Postfix tutorial (see http://www.howtoforge.com/virtual_postfix_mysql_quota_courier). The first thing to understand about the guide is that it uses the Virtual  Delivery Agent (VDA) and as a result any of the auto responders that you could use by passing them to a pipe via a .forward file simply won't work as the VDA does not support .forward expansions.  This limitation can be overcome via Procmail/Maildrop delivery but that is messy and slower especially for mail systems that are heavily used.  The simple answer is Yaa!

Postfix with dkfilter (DomainKeys Implementation)

Postfix with dkfilter (DomainKeys Implementation)

DomainKeys is an anti-spam software application in development at Yahoo that uses a form of public key cryptography to authenticate the sender's domain. dkfilter is an SMTP-proxy designed for Postfix. It implements DomainKeys message signing and verification. It comprises two separate filters, an "outbound" filter for signing outgoing email on port 587, and an "inbound" filter for verifying signatures of incoming email on port 25. This document is to describe step by step how to install dkfilter for postfix to deploy domainkeys signing and verification.

Set Up Ubuntu-Server 6.10 As A Firewall/Gateway For Your Small Business Environment

Set Up Ubuntu-Server 6.10 As A Firewall/Gateway For Your Small Business Environment 

This tutorial shows how to set up a Ubuntu 6.10 server ("Edgy Eft") as a firewall and gateway for small/medium networks. The article covers the installation/configuration of services such as Shorewall, NAT, caching nameserver, DHCP server, VPN server, Webmin, Munin, Apache, Squirrelmail, Postfix, Courier IMAP and POP3, SpamAssassin, ClamAV, and many more.

Enhance Your Mail Server With ASSP (Anti-Spam SMTP Proxy)

Enhance Your Mail Server With ASSP (Anti-Spam SMTP Proxy) 

ASSP stands for Anti-Spam SMTP Proxy. The ASSP server project is an Open Source platform-independent transparent SMTP proxy server that leverages numerous methodologies and technologies to both rigidly and adaptively identify spam. In short ASSP is the most kickass solution that is both free and works great. It reduced spam to an absurd minimum for me.

Virtual Users And Domains With Postfix, Courier And MySQL (Fedora Core 5)

Virtual Users And Domains With Postfix, Courier And MySQL (Fedora Core 5)

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. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses.

How To Combat Viruses Using Your Postfix Configuration

How To Combat Viruses Using Your Postfix Configuration 

In this guide you will learn how to tweak the HowtoForge mail guide for  Postfix (+Auth SMTP + Quota), http://www.howtoforge.com/virtual_postfix_mysql_quota_courier, setup to give better Virus protection.  Sadly this always comes at a price as you will see later on.....

How To Fight Spam Using Your Postfix Configuration

How To Fight Spam Using Your Postfix Configuration

In this guide you will learn how to tweak the mail guide for  Postfix (+Auth SMTP + Quota), http://www.howtoforge.com/virtual_postfix_mysql_quota_courier, setup to better combat SPAM and allow a little bit of backward compatibilty of the older Qmail systems.

Postfix Spam Filter using Ubuntu Dapper, MailScanner, SpamAssassin, Razor, Pyzor, DCC and ClamAV

Postfix Spam Filter using Ubuntu Dapper, MailScanner, SpamAssassin, Rayzor, Pyzor, DCC and ClamAV

This is a similar version of the HOWTO that can be found here: http://www200.pair.com/mecham/spam/spamfilter20050628.html. Except for using Ubuntu Server instead of Debian and MailScanner instead of Amavisd, the Postfix, Rayzor, Pyzor, DCC and ClamAV sections are almost the same.

Killing That Spam With Postgrey And Postfix

Killing That Spam With Postgrey And Postfix

Ever heard of stopping spam with greylisting?

This tutorial will show you how to setup greylisting with Postgrey and Postfix on Debian. Greylisting will not replace spam filtering software like SA but it will serve as a powerful first hurdle for spam thus reducing the ammount of spam entering the system at all.

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