Order (or just read more about) Spamassassin from Amazon.com
Copyright September 2004 Tony Lawrence
I'm sure that the Spamassassin developers are doing the best they can, but the sad fact is that the spammers are winning the war.
I don't think there really is a good solution for spam right now. Blacklists don't work, Bayesian filters don't work - nothing works well enough to stop spam entirely.
Still, Spamassassin is useful, and because it is configurable (and open source), you at least have complete control. That assumes, of course, that you understand how it works. That's the reason to buy a book like this, but I was a bit disappointed in that area. I'm not sure yet whether the fault is Spamassassin - maybe it's just not as configurable as it should be - or this book just not explaining things very well.
For example, I note that an awful lot of the spam I get is from certain IP blocks. I don't want to block out large ranges arbitrarily, but I thought it might be interesting to increase the Spamassassin score if the sender was in one of those ranges.
Well, if there is a way to do that, I still haven't figured it out. It could be me - maybe I just haven't read things carefully enough - but I didn't feel that I understood Spamassassin after reading this. Maybe this needs to be a bigger book - only about 100 pages are devoted to configuration and modifying rules, the rest is installation advice.
On the other hand, there's nothing else out there, and this isn't totally without value. If you are using Spamassassin, you may want to pick this up - it could be a long wait for anything better.
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More Articles by Tony Lawrence © 2011-04-29 Tony Lawrence