Hi, i started a ipv6 rbl Under exim(4) you get use it like any other blocklists. Maybe it works also under postfix and other, but i didn't tested yet. If you MTA do lookups like this: http://www.exim.org/exim-html-current/doc/html/spec_html/ch40.html#SECTmorednslistslast it should work... blocklist dns: rbl.ipv6-world.net You can add more IPs here: http://ipv6rbl.ipv6-world.net/ The web-edit is under development. Feedback welcome !! :) Stephan