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Old 07-16-2010, 05:08 AM   #1
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Postfix and greylisting

I'm going to implement greylisting on my mailserver but not sure what to use.

So is there "de-facto" greylisting software for postfix? Gld? Postgrey? Any software I should not even consider?

Mysql support would be nice but not "must have" functionality, what I need is stable and working solution.

Ofcourse if you think I shouldn't use any greylisting at all you can share your opinion

Currently I'm using few rbl lists and spamassassin and it's working fine but as traffic increases I think that greylisting can help to reduce load on server.
Old 07-16-2010, 08:00 AM   #2
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Old 07-17-2010, 10:14 AM   #3
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+1 for postgrey.

Occasionally I scan my mail server logs for (spam) grey-list rejects that don't retry. In my case, it looks like it reduces the spam load by about 60%.
Old 07-18-2010, 02:18 AM   #4
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Thanks, so postgrey it is.

Using few rbl's seems to cut over 90% spam but implementing greylisting before rbl's should reduce network load a bit I think. Not necessarily in noticeable amounts on small systems (like mine is at the moment) but in larger systems I think it makes big difference.



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