HowtoForge - Linux Howtos and Tutorials - Postfix

Hardening Postfix For ISPConfig 3

Wed, 01 Feb 2012 17:25:59 +0100

Hardening Postfix For ISPConfig 3

The goal of this tutorial is to harden the mail server postfix used by ISPConfig for internet mail servers where authenticated users are trusted. With this setup you will reject a great amount of spam before it passes into your mail queue, saving a lot of system resources and making your mail server strong against spammers and spam botnets.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.2 x86_64)

Tue, 31 Jan 2012 19:54:18 +0100

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.2 x86_64)

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, 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. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin, ClamAV and SquirrelMail.

AVG Antivirus For Linux/FreeBSD Plus Postfix Mail Server

Mon, 23 Jan 2012 17:52:20 +0100

AVG Antivirus For Linux/FreeBSD Plus Postfix Mail Server

This document describes how to deploy AVG Antivirus for Linux/FreeBSD to a Postfix mail server. It is usable for AVG version 8.5, 10 and 2012.

Securing Your ISPConfig 3 Installation With A Free Class1 SSL Certificate From StartSSL

Tue, 17 Jan 2012 17:50:17 +0100

Securing Your ISPConfig 3 Installation With A Free Class1 SSL Certificate From StartSSL

This tutorial shows how you can use a free Class1 SSL Certificate from StartSSL to secure your ISPConfig 3 installation and get rid of self-signed certificate warnings. The guide covers using the SSL certificate for the ISPConfig web interface (both Apache2 and nginx), Postfix (for TLS connections), Courier and Dovecot (for POP3s and IMAPs), and PureFTPd (for TLS/FTPES connections). If you've installed monit and use HTTPS for its web interface, I will show you how to use the StartSSL certificate for it as well. This guide assumes you use Debian or Ubuntu; the principle is the same for other distributions supported by ISPConfig 3, but paths might differ.

Installing iRedMail And Mailman On Debian Squeeze

Mon, 02 Jan 2012 17:04:44 +0100

Installing iRedMail And Mailman On Debian Squeeze

I'm a big fan of iRedMail, which is basically a packaged version of Postfix and the other bits that make Postfix cool, like Spamassassin, greylisting and an LDAP or MySql back-end. One thing I wanted with iRedMail is Mailman, my favourite mailing list server. Integrating the two can be a mission though, so here's some instruction to save you from quite a bit of pain.

Installing Maia Mailguard On Debian Squeeze (Virtual Users/Domains With Postfix/MySQL)

Wed, 07 Dec 2011 17:12:41 +0100

Installing Maia Mailguard On Debian Squeeze (Virtual Users/Domains With Postfix/MySQL)

This guide explains how to install Maia Mailguard, a spam and virus management system, on a Debian Squeeze mailserver. Maia Mailguard is a web-based interface and management system based on the popular amavisd-new email scanner and SpamAssassin. Written in Perl and PHP, Maia Mailguard gives end-users control over how their mail is processed by virus scanners and spam filters, while giving mail administrators the power to configure site-wide defaults and limits.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 11.10)

Sun, 06 Nov 2011 18:29:15 +0100

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 11.10)

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. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV. 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 Server - Ubuntu 11.10 [ISPConfig 3]

Fri, 14 Oct 2011 15:12:14 +0200

The Perfect Server - Ubuntu 11.10 [ISPConfig 3]

This tutorial shows how to prepare an Ubuntu 11.10 (Oneiric Ocelot) server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache web server, Postfix mail server, MySQL, BIND or MyDNS nameserver, PureFTPd, SpamAssassin, ClamAV, and many more.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.0 x86_64)

Thu, 08 Sep 2011 18:13:29 +0200

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (CentOS 6.0 x86_64)

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 that Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. 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.

How To Install And Configure Mailman (With Postfix) On Debian Squeeze

Sun, 17 Jul 2011 19:51:28 +0200

How To Install And Configure Mailman (With Postfix) On Debian Squeeze

Mailman is an open-source mailing list manager, i.e., it can be used to manage email discussions and newsletter lists. It is probably the most popular and widely used mailing list manager on the Internet. This tutorial explains how to install and configure Mailman on a Debian Squeeze server with a Postfix mail server.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 15 x86_64)

Tue, 28 Jun 2011 17:27:44 +0200

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Fedora 15 x86_64)

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. Passwords are stored in encrypted form in the database. 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.

Postfix/Dovecot Authentication Against Active Directory On CentOS 5.x

Wed, 22 Jun 2011 18:30:48 +0200

Postfix/Dovecot Authentication Against Active Directory On CentOS 5.x

This document describes how to integrate Postfix/Dovecot with Microsoft Active Directory on CentOS 5.x, and you can manage mail users in Microsoft Active Directory. You will learn how to enable Postfix to look up email addresses in Active Directory and how to enable Dovecot to authenticate against Microsoft Active Directory.

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 11.04)

Thu, 16 Jun 2011 17:56:24 +0200

Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 11.04)

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. Passwords are stored in encrypted form in the database. 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 Server - Fedora 15 x86_64 [ISPConfig 3]

Thu, 26 May 2011 17:18:38 +0200

The Perfect Server - Fedora 15 x86_64 [ISPConfig 3]

This tutorial shows how to prepare a Fedora 15 server (x86_64) for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache web server, Postfix mail server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, and many more.

Setting Up A Spam-Proof Home Email Server (The Somewhat Alternate Way) (Debian Squeeze)

Mon, 16 May 2011 18:32:56 +0200

Setting Up A Spam-Proof Home Email Server (The Somewhat Alternate Way) (Debian Squeeze)

Email spam is a huge problem. I have found for myself quite a simple solution, however it'll take some time to "migrate" completely over to it. The solution is to create a unique email address everytime I have to give an email address to someone else or to some website to sign up. If I want an account at twitter, I'd use "www.twitter.com@MYDOMAIN.COM". For webbased services, I use the full domain name incl. subdomain (www) on the left of the @ (some poorly designed websites do not recognizes the www. as valid email address, for those I just leave it away).