Dealing with spammers

I've been dealing with a ton of comment spam lately. Do you have a favorite anti-spam technique?

Posted Oct. 22, 2009 in server, iptables, misc at 12 a.m.

As the byline notes, I've had a lot of spam posters lately. I've been deleting the comments, banning their IP addresses, and most recently publicising their email addresses in an attempt to spam the spammers! I suspect it will do no good, and that they're probably fake addresses, but it makes me feel better.

Do you have any great hints for cutting back on spam? Here's the IPTables line I'm using to ban IP ranges, by the way:

-A INPUT -s 95.24.0.0/16 -j DROP

The /16 signifies that it drops the entire range of addresses starting with 95.24 -- which according to WolframAlpha is a Moscow-based telecom company. (Mebbe similar to something like Comcast, but in Russia. I don't know. All I know is my spam is significantly down after banning it. Sorry Russian Flash users.)

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