Spammers charge real money for their dubious services, and hundreds of advertisers are willing to pay. We’ll show you some innovative techniques for controlling and containing spam, including strategies for slowing down spam bots, keeping spammers from getting your address, and separating spam from legitimate email.

They run on Red Hat Enterprise Linux, cost money, and juggle email messages: these three commercial mail servers aim to convince admins they are worth the price.

Zsync handles a special case: large volume download files that change frequently but not drastically. Charly shows how this handy file fetcher can save you time and bandwidth.

Grid computing lets little PCs work on big problems. You can use the grid system of the famous SETI@home project to build your own grid computing solutions.

Debian hotplug is designed for little more than loading drivers and configuring devices. The collection of scripts discussed in this article helps Linux to respond when a network cable is plugged in or when a cellphone is in the vicinity. Read on for more on how to define custom hotplug events.

Hotplugging is invisible and automatic – if you want it to be. But a close look at the Linux hotplug system reveals interesting opportunities for customization.

Better knowledge of the Linux hotplug system opens the door to to innovation and automation. We’ll show you a custom backup solution for laptop computers.