Virtual domains can be used to route e-mails from multiple domains to the correct mailboxes. In order to make it work, some changes need to be made.
First we need to edit the main.cf (on my Ubuntu server in /etc/postfix/) and add the following lines:
Angry IP scanner is a free network scanner which supports Mac OSX, Windows and Linux. It has an intuitive GUI which makes it easy to use. You can download Angry IP scanner here, more screenshots are available here.
The last few days I keep having trouble connecting to my imap server running Cyrus. I started to view my syslog when trying to authenticate to the Cyrus server, there was one line interesting:
I thought it should have something to do with the passwords so I tried to enter the Cyrus server with:
When I entered my password I could not connect. This was weird since I was 100% sure about the correctness. To be sure I resetted all my imap box passwords using:
This didn’t fix it either. Then I read on a website about the saslauthd daemon not running. I restarted the service and everything worked as normal 
My guess is that an Ubuntu update stopped the saslauthd daemon but did not restart it.
Quintin, a friend of mine, showed me a way to readout the sensors of my EEE Box in Ubuntu server.
The first step is to install the lm-sensors package
Then you need to load the w83627ehf kernel module using
In order to have your sensors detected launch the command below and follow the steps shown (basically you can just press [enter] to each question).
Now you can readout your sensors by using the command
Remember if you want to load the w83627ehf module every time the sysem reboots, you need to update your /etc/rc.local with the line:
readout of my sensors
I wanted to switch from Kubutu to Xubuntu, this all went fine except the splash screen. The startup splash still was the Kubuntu one. In order to change this to the following:
Select the option of your Xubuntu splash screen. Reload the spash with:
After installing Xubuntu in VMWare I noticed that it had the wrong timezone set up. In order to change the timezone execute (as root) the following:
A while ago I posted about how one can install Kubuntu on a netbook without cd-rom device. Although there were some issues on the NC10 still it worked pretty neat. Two days ago Kubuntu Jaunty (9.10) was released. I updated my NC10 with this version and this is what I discovered:
The new Kubuntu
If you are a hacker, what is the thing you want to be on a Linux System? Root. You can try to access a ssh server with the root user. There is an option in the ssh server configuration which prevents a remote root login. This does not mean you can not become root, it means no one can directly login as the root user. So if you are logged in as Alice you can simple enter the “su” command to become root.
How we can prevent the remote root login is described below.
When I bought my Samsung NC10, I noticed some weird behaviour of the sound card; when I plugged in my headphone the speakers still played sound as well. This morning I updated my Kubuntu running Samsung NC10 with a new kernel: 2.6.27-11-generic. After a reboot I noticed I finally had a headphone slider in KMixer.
KMixer
I have my netbook, and I have a server. Now I want to sync files between these machines in order to keep a backup of all the documents of my netbook on the server. I found a page which explains how to sync between two servers. With a little tweak I created the command which I needed in order to sync the two folders.
$ rsync -avrR --links --rsh=/usr/bin/ssh ~/Documents/ home.basvandijk.eu:
In this command Documents/ is the documents folder in my home dir, home.basvandijk.eu is the server containing a Documents folder as well which is used to sync to.