HOW TO: Build A Spam Filtering Mail Gateway
Spam has evolved from a nusance to a threat. SysAdms need a strategy for combating spam. You can use filtering software loaded on
all your users computers, but that takes a lot of time to install and maitenance can be real drag on your time and resources. A better way is to use a centralised device which filters your spam before it enters your enterprise. This "Anti-Spam Gateway" is a lot easier to manage and maintain than individually installed client software. Additionally, it can be tuned to be a lot more effective. How To Build A Spam Filtering Mail Gateway | HowtoForge - Linux Howtos and Tutorials