>>> Postfix 2.11 (currently in development snapshots) includes a >>> wonderful feature to bypass postscreen tests for clients listed in >>> dns whitelists, such as list.dnswl.org, greatly reducing unnecessary >>> tests. >> >> I'm actually using postfix-2.11_pre20130710. Can you point me in the >> right direction for setting up the DNS whitelist interaction? Should >> that (for example) prevent comcast.net users from receiving 450 error >> email notices? > > Excellent! > > Use a dns white list with a negative score in the > postscreen_dnsbl_sites, and set a negative value for > postscreen_dnsbl_whitelist_threshold. Simple example: > # main.cf > postscreen_dnsbl_sites = zen.spamhaus.org list.dnswl.org*-1 > postscreen_dnsbl_whitelist_threshold = -1
I've added the following to main.cf: postscreen_dnsbl_sites = list.dnswl.org*-1 postscreen_dnsbl_whitelist_threshold = -1 Thank you for your help! - Grant
