public blacklists

[Scot L. Harris]

On Wed, 2004-12-08 at 10:56, Hongwei Li wrote:
> Hi,
> 
> I included some public blacklists in my sendmail.mc like
> list.dsbl.org
> relays.mail-abuse.org
> blackholes.mail-abuse.org
> 
> Can somebody tell me more lists that I can add to?

If you are fighting spam then you should implement the latest
spamassassin which utilizes surbl lists.  Reports are that this works
very well.  

However to keep from having to process all those spam messages you
should also implement greylisting.  That alone will reduce spam by over
90% and you won't have to process all those spam messages. 
milter-greylist is a very good implementation that I have used with
sendmail.  Easy to install and has been trouble free.

Greylisting does not even incur the network overhead of using rbls, it
issues a temporary reject on the message.  A real MTA will retry after a
few minutes (sometimes longer) but the spam zombies won't retry.  As a
result most spam gets dropped before you even receive the message.


-- 
Scot L. Harris
webid at cfl.rr.com

We really don't have any enemies.  It's just that some of our best
friends are trying to kill us.