Riccardo Riva

How-To create statistics for Greylisted messages using Postgrey

Riccardo — Tue, 09 Mar 2010 22:05:36 +0000

If you use Postgrey (and you should do it) on your mail servers and you want to have some statistics on the amount of greylisted messages and other information, you should find useful the following script. The scripts assume that you have installed Postgrey (http://postgrey.schweikert.ch/) on RHEL (http://www.redhat.com) or CentOS (http://www.centos.org). If you are using other distros [...]

How to daemonize ARECA RAID Controller HTTP Manager

Riccardo — Sun, 28 Feb 2010 22:05:07 +0000

This simple How-To will explain a raw and dirt method to daemonize to http manager for ARECA Raid Controller. If you have this controller on your system you should find in the bundled CD-ROM the following folder : root PACKAGES -> Linux -> CLI -> version -> i386 -> cli32 PACKAGES -> Linux -> CLI -> version -> x86-64 [...]

Bacula init script for RHEL / CentOS

Riccardo — Fri, 19 Feb 2010 22:01:25 +0000

The following is a simple (and very row) init script for Bacula 5.0. I wrote it because I really hate to execute script not registered with chkconfig on a production systems. The following is the script : #!/bin/sh # # BACULA Control Script # chkconfig: 2345 99 01 # Description: Here is a little startup/shutdown script for RedHat/CentOS systems # # processname: bacula # bacula-dir [...]

How-To create a complete Mail Relay with GreyListing, Antivirus, AntiSpam, RBL and other checks and Reverse Proxy

Riccardo — Thu, 11 Feb 2010 22:01:08 +0000

In this tutorial I will describe how setup a complete mail server for relaying mail to another server, for example an IMAP server or an Exchange, tipically this machine will be placed in a DMZ network and will be reachable from internet. I will explain how to install and configure : - Postgrey : to do GreyListing [...]

How to Tell if Your Processor Supports VT from Linux shell

Riccardo — Fri, 05 Feb 2010 22:09:48 +0000

Virtualization Technology (VT) is a set of enhancements to CPU that improve performance for running a virtual machine by offloading some of the work to the new cpu extensions. Both AMD and Intel have CPU that support this technology. In some cases it will be very usefule to know if your system can handle it. It will [...]

Bash Script for create users and mailboxes with Zarafa

Riccardo — Fri, 29 Jan 2010 08:05:35 +0000

This post will explain how to create users and mailboxes for Zarafa. I’ve tested it with CentOS 5.4 X86_64 and Zarafa 6.30.9 but it will fit with nearly all installation. First of all you have to create a test file with all the users you want to create, providing the following information : username password email address name surname For example : johndoe password [...]

Geek or Nerds ?

Riccardo — Mon, 28 Dec 2009 16:56:29 +0000

The following was MY results ! The Nerd Test Evaluation Report We’re sorry, but you are not a nerd, you are a geek. Social: Taking tests like this is probably the only way you can score. Health: The surgeon general warns that high cholesterol may promote arteriosclerosis. Aptitude: You don’t seem to have any skills whatsoever. Career: You should consider becoming a manager. You sould find [...]

How-To manually update VMware ESX 4 to ESX 4 Update 1

Riccardo — Tue, 01 Dec 2009 11:08:49 +0000

If you have a standalone VMware ESX 4 unmanaged or you haven’t yet configured VMware Update Manager, and you want to update it, you should do the following. Download the update package from VMware Web Site : ESX-4.0.0-update01.zip Copy it to your ESX Server 4 (i.e. on /tmp). Connect to your ESX Server with SSH or to a [...]

How To run VMware vSphere Client on Windows 7

Riccardo — Tue, 17 Nov 2009 02:00:04 +0000

Hi all, unfortunately I’m trying Windows 7 as my primary notebook OS (obviously on a Virtual Machine) and the main problem I’ve found was the inability to run VMware Vsphere client. As you can see below, the client was installed correctly without any errors : When attempting to run the client I’ve received the following errors and I [...]

How to Enable or Disable Quick Launch in Windows 7

Riccardo — Fri, 13 Nov 2009 08:17:22 +0000

From : SevenForums.com By default Quick Launch is disabled in Windows 7. This will show you how to enable or disable Quick Launch on the taskbar in Windows 7 as a toolbar with small or large icons. Quick Launch is used to open a program quickly from a shortcut on the taskbar. In this case in a [...]

Countdown initiated

Riccardo — Sat, 17 Oct 2009 08:43:52 +0000

Karmik Koala is coming …. are you ready ? for the impatience, you can download the beta from here : http://www.ubuntu.com/testing/karmic/beta Bye Riccardo Bookmark It

How-To authenticate users for a Fortinet IPSEC VPN to an Active Directory Server with LDAP

Riccardo — Sun, 20 Sep 2009 22:01:38 +0000

This how-to will explain how to use LDAP authentication to Microsoft Active Directory with an IPSEC VPN to a Fortinet device. I’ve tested it with a Fortigate 60B and a Fortigate 100A with success. This post assume you have a fully function VPN IPSEC configuration on your fortinet device with authentication based on a Fortigate group. Connect to [...]

How-To count files in a directory and all subdirectory

Riccardo — Sun, 13 Sep 2009 22:51:10 +0000

This is a simple shell script that count all files in a local directory and all subdir. It doesn’t care what extention the file has, it will just recursively go through each directory and count any files within it, plus recurse into any more directories it finds. Give it as a parameter the directory you [...]

VIM Tips and Tricks

Riccardo — Sun, 06 Sep 2009 22:01:03 +0000

This wuold be a simple reminder for the most common tips for VI or VIM. It would not be a deep dive on it, simply a memo for the most common feature used by me. Search and replace a string in a document : :.,$s/search_string/replacement_string/g Disabling highlighted patterns : Type “:nohl” to disable highlighting Comment out several lines at once (I [...]

Bash shortcuts

Riccardo — Thu, 27 Aug 2009 22:01:52 +0000

The following is a great memo for a lot of bash shortcuts. Original link : HowToGeek CTRL Key Bound Ctrl + a – Jump to the start of the line Ctrl + b – Move back a char Ctrl + c – Terminate the command Ctrl + d – Exit the current shell Ctrl + e – Jump to the end of [...]

How To use grep, sed and awk on a Linux system

Riccardo — Thu, 20 Aug 2009 22:01:09 +0000

The following is a simple memo on how to use the three powerful tools above. It will not be a complete guide, and you should find only a small part of the possible use, but this would be a review only for the most common use (for me) and would not go a deep dive. Grep grep : [...]

How To use I/O Redirection on a Linux system

Riccardo — Thu, 13 Aug 2009 22:01:15 +0000

This would be another little memo of all the most used (by me) Input/output redirections and pipes. As other times this would not be a complete guide, and would not go into the deep. The base : Standard input (stdin) : 0 Standard output (stdout) : 1 Error output (stderr) : 2 > : output redirection < : input redirection >> : append [...]

VMware ESXi vs Microsoft Hyper-V Server IMHO

Riccardo — Sat, 08 Aug 2009 19:31:09 +0000

This post is not for a sort of “religion war” between Microsoft and VMware. I’m using daily both Microsoft products with satisfaction (not every time) and VMware. I love VMware products, and this is not a secret, but before today, I’ve read everything about Microsoft Hyper-V, so I’ve decided to download it and test it. The following is [...]

How-To patch an ESX server with VMware Update Manager

Riccardo — Fri, 31 Jul 2009 22:02:37 +0000

I started using VMware Update Manager almost immediately after its release. In my opinion another patching software for Microsoft Windows wasn’t needed when WSUS already existed and does a great job at Windows patching. For the above reason I’m using VMware Update Manager only for patching esx hosts. One of the most important feauture of Update Manager is [...]

How-To purge Microsoft SQL 2005 database log files

Riccardo — Mon, 27 Jul 2009 22:02:02 +0000

Recently I was trying to move VMware VirtualCenter database from one server to another and found that for 250MB database I have about more than 30GB of transaction log (LDF) files. I wanted to get rid of this file. There are 2-3 methods but the method I’ve used was thew following : 1) Open SQL Management [...]