Clamav is an excellent open source multi-platform antivirus program that we use on our systems and projects.  While clamav comes with utilities to update the antivirus definitions, there isn’t a utility to update the engine (instead the antivirus update gives a warning).…

Recently, we turned on block-list spam protection provided by the zen.spamhaus.org in addition to regular DNS-based restrictions. Thanks to Zimbra’s graphing capabilities we have a powerful visual depiction of the power of Spamhaus: This graph displays the number of messages processed…

This past Monday the amount of spam hitting our Zimbra mail server (5.0.5) spiked to twice the usual amount, causing our sever to fall 15 minutes behind in delivery.  While we were doing pretty well with spam blocking through Pyzor…

While most of our mail is simply sent to “person@tcg.com”, our Zimbra server has a larger qualified domain name (let’s call it “mail.tcg.com”).  To get this to work, we completely configured up the domain “mail.tcg.com” and all the users within our…

Zimbra uses OpenLDAP for its directory, and after way too much fiddling with domains, we ended up corrupting our database.  There was a partial “.net” entry in our LDAP that we couldn’t remove.  So, we decided to dump the LDAP contents…

With our company’s move to the Zimbra mail server finally complete (and working very well), we noticed an sudden increase of a particular type of spam: fake bounce or mail server error messages.  This was surprising since our old mail and…

For our NITRC project, which is based on GForge 4.5.x, we wanted to integrate it with MediaWiki.  However, while the latest version of MediaWiki (which has group workspaces) runs on PHP 5, and all of the GForge documentation refers to…

I remember being so excited the first time I played PacMan in an emulator.  Now virtualization has become so fast, I can watch TV in a virtual machine.  Specifically, VMWare Server 1.0.5 is able to run Mythbuntu 7.10 as a front-end at 640x480 at…

In the early 90s, we worked on these large black and white Sun monitors with X‑Windows.  The problem was that with monochrome screens, we’d lose our cursor if we glanced away for a second.  The solution was xeyes: a charming set of…

My wife and I love our MythTV box (a great set of open source projects that allow you to make your own TiVo-like machine), so we just needed to have a front-end box for our treadmill.  But, we didn’t have an extra…