[nycbug-talk] ORDB.org replacement

[Okan Demirmen]

On Mon 2007.03.12 at 14:17 -0400, Dan Langille wrote:
> On 12 Mar 2007 at 14:05, Okan Demirmen wrote:
> 
> > On Mon 2007.03.12 at 10:22 -0700, Peter Wright wrote:
> > > 
> > > > On Mon, 12 Mar 2007 09:24:09 -0700 (PDT)
> > > > "Peter Wright" <pete at nomadlogic.org> wrote:
> > > >
> > > >> hey all,
> > > >>   i used to use the ordb.org blacklist on my postfix boxen.  they have
> > > >> shut down.  are there any other decent rbl lists out there that folks
> > > >> are using?
> > > >>
> > > >> thx,
> > > >> -pete
> > > >
> > > > I know what you mean pete.  Most the ones I've used in the past have
> > > > dropped.  Here a snip from my main.cf.
> > > >
> > > > #       reject_rbl_client relays.ordb.org
> > > > #       reject_rbl_client sbl.spamhaus.org
> > > > #       reject_rbl_client opm.blitzed.org
> > > >         reject_rbl_client list.dsbl.org
> > > >
> > > 
> > > lol...that's pretty much what i have as well ;)  i'll give dsbl.org a shot
> > > now.  thanks!
> > 
> > why do you guys even use blacklists?  have you any statistics on the
> > effectiveness of blacklists after greylisting?  i'm assuming close to
> > 0%, for with just greylisting the amount of spam is already close to
> > nil (and it costs nothing).
> 
> What are you basing that estimate upon?

my experiences, but i do not have hard data to back up .9% or .1% - that
is why i was asking for data from others who do blacklisting...they do
keep stats right?

> > i am interested in data; i'm not just advocating.
> 
> I turned off blacklists for a few days to see what would happen.  My 
> spam levels jumped by between 200 and 400%.  Despite greylisting.

interesting - so you are saying that greylisting + blacklisting reduces
overall spam in your enviornment by 200-400%.

> There are many areas of the internet that produce a great deal of 
> spam through valid MTAs.

true, but are full scale backlists the right solution.  does every
blacklist meet the requirements of your business?

anyway, feel free to ignore - this is OT.