On Tue, Jul 24, 2012 at 03:38:00AM -0500, Stan Hoeppner wrote:
Greylisting only stops bots. It is resource intensive, and causes delivery delays. There exist bot spam killing solutions that are just as effective, with less downside. Two are Postfix' postscreen daemon, and fqrdns.pcre, which rejects based on consumer/dynamic looking rDNS. I use that in order to decide the greylisting delay: suspect IP get a 12 hours greylist, everyone else gets 15 mn, or 0 if whitelisted by recipeients. It works quite well. Have you considered using some dnswl (whitelist) to turn off greylisting for some hosts? e.g. dnswl.org. Greylisting for dnswl.org "none" level (the lowest
On 07/24/2012 11:45 AM, Emmanuel Dreyfus wrote: trust) makes (some) sense only if you use bulk detectors like razor/pyzor/DCC.