greylisting with procmail

[Ed Greshko]

Martin Marques wrote:

> We're using postfix with postgrey and we don't have that amount of delay.

I'm using the smf-grey milter.  http://smfs.sourceforge.net/smf-grey.html

> I also haven't seen such a drastic cut in spam messages as to 80%, but 
> maybe 40% or 50%. We do have other spam tools installed as well.

I'm in Taiwan and I did an analysis over 1 week and found 80% fewer spam 
messages making it to spamassassin.  So, for me, smf-grey + spamassassin 
results in about 6 messages per day ending up in SPAM folders and maybe 2-3 
undetected spam making into Inboxes.