Milter-greylist

--- In milter-greylist@yahoogroups.com, Kai Schaetzl <maillists@...> wrote:
> If the idea behind this is to reduce the database size why not go to 
> 2-tuple saving only if lazyaw is set? Someone who wants to use this 
> AUTO_GENERATED_USER approach might just want to use lazyaw (as I do on all 
> machines).

I find only 1% to 2% of greylist and whitelist entries match these criteria, thus subjecting the 
other 98% to it is a major algorithm change; although I never propose rejecting an idea 
without trying it "in the wild".

For many spammers, the enveloper sender distinguishes different machines using a common 
relay. Although most spam-bots use SMTP directly to the "victim", quite a few ISP's block port 
25 outbound and a thus there is benefit in matching the envelop sender.