Quote from ben
http://www.oxwall.org/forum/topic/5920
im not sure what the best antispam that can make you happy, at least paul trying to help you with this plugins. and he made it easy to install and uninstalled.
Yes, I noticed that there's a new anti-spam plugin "Watchdog" (at least, the name is different...). But both seem to work the same way, by blocking IPs allegedly used by spammers at some point.
I think it the problem lies in the concept behind those listings. If you check their list, you'll see that they are based on EMAIL addresses once (or twice?) used to send spam, and they block the IP that was associated to that email when it was identified as spammer.
The problem is that rarely a spammer will use a static or dedicated IP!!!... More often than not, they'll go to LAN houses or Cybercafes, anywhere where they can pay per use to access internet, and send spam using a public and free email account, (like Gmail or hotmail, as I saw most of the ones listed there), until this account gets spotted and blocked.
And the biggest problem is that the same IP is issued later to an honest user, as those are issued dynamically (temporarily) by the internet access provider when you connect to the internet, a different one each time!
I believe that it's exactly what happened to me, the IP I was using and that got blocked was indeed listed there, but in connection to 4 or 5 different emails (gmail and hotmail). I have no control over the IP I'll using every day when I turn on the internet... And today I was issued a 'bad' one, among the millions the internet provider has registered to them...
So, maybe (I don't know if it's possible), you could find a way to use the same database but NOT block the IP, and block the email instead?
I mean, I was connected using MY email, which is the same as the Admin, and still got blocked because the IP was linked to 5 different spotted spammers??? It doesn't seem too efficient, does it? :)