I just installed RH9, as required by the customer, and wondered if I would have problems with lack of official support and updates from Red Hat. Thankfully, the Fedora Legacy project provides updates to RH9. It just takes a few commands, and it’s all set. :) www.fedoralegacy.org…

A good anti-spam solution must have at least two approaches: An RBL check, and a learning tool of some sort. When deploying an RBL check solution, one must note that the lists should be picked carefuly, since they could block HAM either. It is important to implement exceptions lists, either, in order to ignore some key entries in the lists (murphy.debian.org, for example). About the learning tool, this will the topic for a future post.…

vmstat is a wonderful tool, whose output is a bit cryptic for the faint of the heart. Proc -– r: Processes actually running, waiting for some attention from the CPU b: Uninterruptble sleeping processes (This I am yet to discover what does it mean) Memory: -– swpd: Virtual memory usage (swap areas are listed in /proc/swaps) free: Idle memory buff: Memory used as buffers, like before/after IO operations, I guess…