Re: [Exim] Idea to slow down spammers

On Wed, 30 Apr 2003, William Thompson wrote:

> > Right, but the dictionary scanners that I'm thinking of seem to have a
> > rolling list of hundreds of open proxies which they use. As soon as
> > our mailer spots the pattern, it drops those IPs one by one into a
> > local blacklist, and by that means we've collected nearly two thousand
> > such IPs so far this year alone.
>
> Would you consider publishing your black list?

I can see your point, sure, but I would say this: following a delay
which is often no more than an hour or two, sometimes a day or two,
practically all of the addresses that have been collected into our
local list _do_ turn up at one or other (or several!) of the existing
publicly-accessible blacklists (e.g Proxies RBL at monkeys.com;
Osirusoft's confirmed spam source or open proxies lists; SPEWS;
Blitzed; dsbl.org).

So, if you are making use of those blacklists anyway, then our local
list is of only short-term relevance.

With all due respect, I'm not sure that we'd have the effort to keep
our list clean of any accidents, and to handle any resulting
cartooneys, such that it would repay the relatively small benefit
that it might give to others over and above the already-available
blacklists.

all the best