On Thu, 2009-02-12 at 14:07 -0500, Victor Duchovni wrote: > On Thu, Feb 12, 2009 at 02:02:03PM -0500, Linux Addict wrote: > > > Please see below my smtpd_recipient_restrictions. On my rbl client list I > > have multiple entries, but not sure how many of them actually maintained. Is > > there one single place where I can find such a list. Any help is greatly > > appreciated. > > Replace all of them with just: > > reject_rbl_client zen.spamhaus.org > > If this still leaves you with way too much junk to filter with a content > filter, and you can afford to be more aggressive, add just > > reject_rbl_client bl.spamcop.net > > avoid all the rest, especially the ones long dead. > > Make sure your DNS cache is not using an ISP upstream forwarder. > > If your traffic is high enough, buy a SpamHaus data feed. > Currently this is free too:
b.barracudacentral.org It's used in the Barracuda Spam Firewalls as the default 'reputation' filter. I find it kills more than zen myself, and they have a UK based support operation that deals with false positives that you can *call* on the phone and get a sensible answer from. However, respect none the less to Spamhaus for what they have do. Ironically the growth of the Barracuda List has largely come from Spamhaus shooting themselves in the foot trying to charge Barracuda owners for a feed. My guess, however, is Barracuda will eventually charge too - but at this time it is completely free. They do ask for registration but the truth is it works find without it. Test it before deployment like this (from a recent spammer at 188.16.211.205); dig 205.211.16.188.b.barracudacentral.org Presence of the answer section in the typical 127.0.0.X indicates positive - just like the other RBL's.
