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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.
Simple Linux Auditing
Basic Linux system auditing is a bit tricky and data collected and information of that is out of place and readability is not that good. Recently this led me to put together a Open Source code project and develop simple BASH scripts that do the job nicely. The code and tar ball can be downloaded from both google code or from SourceForge's website and the project website has links to documentation, help, installation and code.
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.
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)
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.
Simple Bash Script To Work As A Daemon
If you need some snippets or codes to run for ever, but not more that one instance, you need to rapidly check the code, or script and if it has died! It's the time to run it again. To be sure of this function, just add the following lock handler at the top of your script
How To Make Your Own (Almost) Chromebook
This HowTo lays out how to convert a regular netbook/laptop/desktop into an almost Google Chromebook using Hexxeh's Chromium OS build. All you need is a 2GB USB stick and a bit of time. It also makes a nice portable operating system as well.
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.
Moving Files Between Linux Systems With SCP
This article is about how to move files between servers using the scp (secure copy) command. To show how it works, I will move files from my HDD to a virtual machine running on VirtualBox. There is Linux Mint 11 installed on both drives.
How To Monitor And Manage Apache Tomcat
This guide provides an overview on how to monitor and manage Apache Tomcat application server.
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