Ending Spam, by Jonathan Zdziarski, may not live up to its name, but it is an excellent overview and introduction to the various methods and techniques used to detect and filter unwanted email
messages. It may not be possible to ever eliminate 100% of spam, because what may be spam to you could be a legitimate email message to someone else. Achieving higher than 99% effectiveness is a
worthy goal though and the information contained in this book can help you get there.
Read the whole story at About.com, August, 29, 2005 »