Mark, we've developed a feature which lets amavis query a DNSBL white/blacklist and depending on the DNS servers reply, lets amavis add the IP in question to a policy bank.
The feature is still in testing here. We'd like to contribute it as patch. Are you interested? p@rick -- [*] sys4 AG https://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
