Recently I have installed and configured dspam on my mailserver. It seems to work nicely but needs occasional training. I wanted to integrate this with Thunderbird so that users could automatically train dspam from their mail client.
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Tired of seeing repeated attempts to login to a Linux server you run?  There are a number of options, all with their own benefits and disadvantages.  The easiest way is to move the port that the SSH server runs on, perhaps to 2222 instead of 22.  However. this can be annoying behind some firewalls and means that you need to specify the port each time you SSH to a host.  This post looks at denyhosts, a viable alternative.
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Extended ACLs on Linux can be incredibly useful.  Permissions can actually be more secure whilst allowing a number of users or daemons access to a file, no longer are unwieldy groups necessary to allow reading or writing.  But for some reason, I noticed that these extended ACLs disappeared when a file was edited in vim. Read the rest of this entry »