Slightly OT: Greylisting success or failure stories?

[Kevin J. Cummings]

David Hoffman wrote:
> I looked for any discussion lists about greylisting and haven't found
> any, so I thought I might try asking here.
> 
> I'm considering adding greylisting to my postfix configuration, and
> some of the articles I have been reading about greylisting show that
> there can be any of several situations in which greylisting would not
> be a viable solution.
> 
> In particular they mention issues with how some MTAs break something
> in the RFC that makes greylisting work, and how receiving mail from a
> site which uses multiple relay hosts (each with a different address)
> can also cause mail to not be delivered.
> 
> So I thought I would ask on the list to see if anyone has done much
> with greylisting and found it to be good or bad.

I installed milter-greylist-1.6.  It got rid of 95% of my SPAM email.
I went from 300-400 messages a day to 2-3.  And those are coming in 
through my fetchmail account, so there's not much I can do about it.
I rely on Spamassassin and the Bayesian filters in Thunderbird to get 
rid of most of those.

I liked greylist-1.6 so much that I made an FC2 RPM (and SRPM) for it 
(from the 1.4 SRPM and the 1.6 tarball).  It is available here:

	http://kjchome.homeip.net:81/milter-greylist-1.6-0.i386.rpm
	http://kjchome.homeip.net:81/milter-greylist-1.6-0.src.rpm

> I do also use the DNSBL lists, and some of my accounts also use TMDA.
> What I am hoping for is that with greylisting, I can further reduce
> the amount of spam mail traffic.

I started by using SPAMHAUS blocking in sendmail.  Then I installed 
Spamassassin (as a procmail filter to flag SPAM), and then I added the 
SPF-milter.  None of these made dent like milter-greylist did!

I'm still running all four, and a much happier camper now.

-- 
Kevin J. Cummings
kjchome at rcn.com
cummings at kjchome.homeip.net
cummings at kjc386.framingham.ma.us