Toby DiPasquale on 4 Apr 2006 00:19:36 -0000

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Re: [PLUG] OT: Verizon & spam blocking

On Mon, Apr 03, 2006 at 03:08:23PM -0400, Doug Crompton wrote:
> 99% of spam and junk mail comes from offshore. Here I blocked all offshore
> IP's that offend and it dropped my spam to nil. Since I do my own mail and
> I don't care about anything offshore it has not been a problem. Perhpas if
> more organizations did block them it would force the offending countries
> to clean up their act.

False. Over 60% of spam worldwide originates from inside the US. While I
have no trouble believing that the majority of your spam appears to come
from outside the country, that's not indicative of the global spam flow.

As for "cleaning up their act", we've been attempting to get them to do
just that for years. The problem is, you can't legitamitely block some of
the largest sources of offshore spam because they are simultaneously the
largest sources of offshore ham. The biggest guys never get blocked by
blacklists because they are such sources of ham and because of that,
listing them would reduce the credibility of any public DNSBL you might 
maintain. This two-fold effect serves to make DNSBLs only effective for
the lower and middle tiers; the big guys just never get on and if they do
happen to be listed, everyone stops using that DNSBL.

Toby DiPasquale
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