SQLgrey Postfix greylisting service
Description
Postfix greylisting policy service with auto-white-listing written in Perl with SQL database as storage backend. Greylisting stops 50 to 90 % junk mails (spam and virus) before they reach your Postfix server (saves BW, user time and CPU time).
SQLgrey Postfix greylisting service Web SiteUser Ratings
User Reviews
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I'm the main developer, of course I like it :-) Seriously, it gets the job done without getting in the way.