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.
