W B Hacker wrote: > Mar Matthias Darin wrote: > >> Hello, >> W B Hacker writes: >> >>>> What this does is it gets rid of spammers who don't retry. And the >>>> decrease has been huge. It has eliminated a lot of spam and has cut >>>> the load levels down on my servers significantly. Not getting any >>>> complaints. So I have to endorse it using it the way I'm using it. >>>> >>> You haven't actually provided evidence of *why* you believe it is >>> working, and I >>> suspect, if only from how quickly you claimed success, that you >>> haven't done the >>> analyis required to be able to determine the effectiveness. >>> You simply haven't had time to do so. Solid analysis needs days if >>> not weeks of >>> traffic. >>> >> DynaStop specifically identifies dynamic dhcp/dialup IP addresses that >> in accordance with the many ISPs' AUP/TOS do NOT allow these users to >> send mail except through the provider's exchange server. >> As to the proof... a valid question that deserves a valid answer: I have >> six years of research in the area, all of which is available at >> http://tanaya.net/DynaStop/ >> > > I have no argument with the *effectiveness* of the DynStop approach, as we had > used some similar home-brew methods for some time. > > I have a major issue only with being made to believe that it can be as > *efficient* or resource-light as cached RBL hits against the same offenders. > > AND as rapidly updated/able as the RBL+DNS cache can be. See TTL. > > W/R Marc - wrong or irrelevant conclusions on scant evidence do NO product or > program any good. Further, the business of providing 'extra' mx and claiming > spam reduction 'coz of no 'retry' is a sure sign of short-interval log > analysis. > > For sure a handful of forged HELO and/or 'borrowed' dynamic IP copied from the > allegedly 'beaten' spambot and grep'ed for each day will show up again. Next > day, next week, and next year, if not in half an hour's time. > > *snip* (DynStop info now list archived fro those who want it) > > Note the arrival time intervals are fairly well spread out. > > I've boxen that lay quiet for hours, then get hit harder than than in a > fraction > of the time. > > > >> Vietnam War. As a member of the Army, CPL Adams served our country until >> > > I haven't forgotten any of that, thanks. Long Binh AUG 67- AUG 68. > > But this list is not really the place for it. > > Regards, > > Bill > >
I'll tell you what Bill. I'm willing to prove how effective my spam filtering is. I will give you free front end spam filtering for a test run and you can see for yourself. I have the most accurate spam filter on the planet and willing to prove it. -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
