[nycbug-talk] ORDB.org replacement
Okan Demirmen
okan at demirmen.com
Mon Mar 12 16:53:53 EDT 2007
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.
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