Milter-greylist

Tomasz Baranowski wrote:
> 
> 
> What DNSRBL settings do you recommend ? (What servers are most trustable).
> 
> Regards,
> Blizbor

The most reliable dnsrbl I've seen is zen.spamhaus.org (
http://www.spamhaus.org/zen/index.lasso ).  Very few apparent false
positives (I've checked this against over 220,000 emails).  It's good
enough to be used to block at the MTA level.

But, for greylisting, it doesn't matter that much if there are a few
"bad" entries, the only effect is for emails to be delayed by 15 minutes
(if you set short greylist periods).

Others I'm happy to greylist with are:

dul.dnsbl.sorbs.net - Dynamic IP Address ranges (NOT a Dial Up list!)

bl.spamcop.net

combined.njabl.org (127.0.0.3)

psbl.surriel.com

None of these lists had more than 350 false positive emails in my sample 
of 220,000.


Cheers,

Phil