Craig White wrote:
I also use MailScanner as my wrapper for spamassassin and clamav and find it very, very effective (don't listen to the doom and gloom folks that poo poo using MailScanner on Postfix)
I had MailScanner installed and it worked great. I switched to Amavis-new because I was afraid the authors of postfix would stop support for MailScanner. Amavis-new has the same results as far as I can tell.
you do these things, you can forget all about rogue networks as you call them and banned cidr's because you will stop almost all the spam with the proper setup and don't need to do wholesale block of ip addresses.
I agree with your conclusions. Greylisting and a tight postfix set up has my Spamassassin mostly idle. In fact, I have eliminated bayes from spamassassin because I do not get enough spam to train it well. I do use rulesdujour in spammassissn to get most of the few who make it through.