Re: RBL report..
On Thu, Mar 30, 2000 at 02:17:55AM +0200, Nils Jeppe wrote:
> On Thu, 30 Mar 2000, Craig Sanders wrote:
> > DUL is very effective in doing that. it prevents spammers from
> > hiding their activities from their ISP...which ensures that they
> > will be caught and their account nuked very promptly.
> Okay, I see this point, however, I do have a problem with the
> categoric blacklisting of IPs just because they're dialup.
i can see why you have a problem with that and i would agree with you
if there weren't any alternatives. however, as has been mentioned many
times, there are several alternatives, including (but not limited to)
a) use the ISP's mail relay
b) use uucp-over-tcp (requires uucp account somewhere)
c) use smtp-over-ssh (requires shell account somewhere)
d) pop-before-smtp or SMPT-Auth or SSL certificate relaying (requires
mail account somewhere)
using the DUL is like a "no junk mail" sticker on your letter box...if
someone wants something delivered to your letter box they have to go
through the normal channels to do so (i.e. pay the postage). i don't
know about other countries, but here in Australia it is illegal to
ignore a "no junk mail" or "addressed mail only" sign on a letterbox.
> > that's the medium-term indirect effect of DUL...the immediately
> > beneficial direct effect is that spam from dialup users is blocked by
> > anyone who makes use of the DUL.
> Well, hmmm, only direct spam, but you are right. DUL and ORBS do make
> for a quite potent combination.
personally, i don't use ORBS - too much collateral damage. i use MAPS
RBL, MAPS RSS, and MAPS DUL...they make a very effective combination.
> I just realized this would also take care of that VERY annoying kind
> of spam where spammers send spam directly to the 2nd highest MX record
> in a zone. That mailserver looks at the MX and thinks, hey, not for
> me, but I'm a fallback, let me just forward this, and my MTA thinks
> hey this is from my fallback, I trust that guy.
yep, as long as the secondary MX uses the DUL that will work (and the
other RBLs too).