HowtoForge - Linux Howtos and Tutorials - Email

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.

How To Install RoundCube 0.7 For ISPConfig 3 On Debian Squeeze

Wed, 21 Dec 2011 17:14:24 +0100

How To Install RoundCube 0.7 For ISPConfig 3 On Debian Squeeze

This will guide you thru the installation of the latest stable version of RoundCube (currently version 0.7) and get it to work together with ISPConfig 3. This guide should work for most Linux distributions but may differ on some parts.

How To Encrypt Mails With SSL Certificates (S/MIME)

Thu, 08 Dec 2011 18:58:50 +0100

How To Encrypt Mails With SSL Certificates (S/MIME)

This article is about how to use the S/MIME encryption function of common e-mail clients to sign and/or encrypt your mails safely. S/MIME uses SSL certificates which you can either create yourself or let a trusted certificate authority (CA) create one for you.

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.

Indicate Mail Accounts On Your Desktop (Ubuntu)

Mon, 28 Nov 2011 18:15:45 +0100

Indicate Mail Accounts On Your Desktop (Ubuntu)

This article is about how to get informed about new mails without actually opening your mail client using a handy indication tool called popper. Popper is silently running in the background and gives you a notice when a new mail arrives at your mail account, containing the mail's sender, subject and the time it arrived. Popper does not actually display the mail's content - it only gives you the information mentioned above. I have tested it on Linux Mint 11, but it should work fine with all other Ubuntu derivatives.

Running Mailman On Nginx (LEMP) On Debian Squeeze/Ubuntu 11.04/11.10

Mon, 21 Nov 2011 17:56:18 +0100

Running Mailman On Nginx (LEMP) On Debian Squeeze/Ubuntu 11.04/11.10

The Mailman package from the Debian/Ubuntu repositories comes with a configuration for Apache, but not for nginx. This tutorial shows how you can use the Debian Squeeze/Ubuntu 11.04/11.10 Mailman package in an nginx vhost. Nginx is a HTTP server that uses much less resources than Apache and delivers pages a lot of faster, especially static files.

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.

How To Migrate Mailboxes Between IMAP Servers With IMAP TOOLS

Tue, 25 Oct 2011 16:20:57 +0200

How To Migrate Mailboxes Between IMAP Servers With IMAP TOOLS

This guide explains how you can migrate mailboxes between IMAP servers with IMAP TOOLS. IMAP TOOLS is a collection of Perl scripts that allow you to do various tasks with IMAP servers and also POP3 servers. In this article I will focus on the scripts imapcopy.pl (copies messages and mailboxes from one IMAP server to another) and pop3toimap.pl (copies POP3 messages to an IMAP server). Both scripts support SSL. If you specify port 993 (995 for POP3) then an SSL connection is initiated. If the port number is 143 (110 for POP3) then it will try a non-SSL connection. With any other value the port will be tested to see if it supports SSL. If so, SSL will be used to make the connection; otherwise a non-SSL connection will be made.

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.

Running SquirrelMail On Nginx (LEMP) On Debian Squeeze/Ubuntu 11.04

Wed, 12 Oct 2011 17:18:51 +0200

Running SquirrelMail On Nginx (LEMP) On Debian Squeeze/Ubuntu 11.04

The SquirrelMail package from the Debian/Ubuntu repositories comes with a configuration file for Apache, but not for nginx. This tutorial shows how you can use the Debian Squeeze/Ubuntu 11.04 SquirrelMail package in an nginx vhost. Nginx is a HTTP server that uses much less resources than Apache and delivers pages a lot of faster, especially static files.

How To Migrate Mailboxes Between IMAP Servers With imapcopy

Wed, 05 Oct 2011 17:36:42 +0200

How To Migrate Mailboxes Between IMAP Servers With imapcopy

This guide explains how you can migrate mailboxes between IMAP servers with imapcopy. imapcopy lets you copy recursively all email messages and folders from one imap account to another. It supports the protocols imap and imaps.