what are others thoughts of the effectiveness of SURBL , risks of false positives, CPU usage, etc
I'm currently doing my spam checking in this order
sbl-xbl.spamhaus.org - reject at SMTP level standard greylisting SURBL - using multi.surbl.org
How are you guys doing it and do you have any suggestions ? Low false positives are my goal in my setup. I wondered if surbl should replace greylisting or RBL or should just complement.
thank you Paul