Matt Kettler a écrit : > I had the same problem. I wound up implementing milter-greylist in a way that > greylists these hosts, but lets most systems past. I'm not sure if you're > using > sendmail or not, but I found this VERY helpful. > > The selective greylisting is possible due to milter-greylist's use of ACLs, > and > a configurable default action. Most folks whitelist certain hosts, and use a > default of greylist. I do the opposite. I greylist selected patterns, then > whitelist the rest.
You can also greylist and/or greetpause hosts with a hostname that looks dynamic. I find this safer than using a dul list. you can also restrict dul lookup to hosts that look dynamic (which is helpful in the case of sirbs duhl, which lists static IPs).
