Doug Crompton on 5 Apr 2006 15:16:00 -0000

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Re: [PLUG] OT: Verizon & spam blocking

Ok according to  you are somewhat
right. It shows 42% US. That is still a great deal coming from offshore.
In my case blocking offshore IP's did eliminate the problem. Most of the
onshore problems are open relays. When I do occasionally have a comcast or
other US ISP problem I report it and I do not see it again. I only have to
look at my mail log and see the endless list of rejects to understand how
much I am dumping. My sendmail access list is quite a large file.

Looking at the charts from the above site it looks like spam has tripled
in the last year and that Verizon has gotten much better, and comcast and
rr worse as offenders.


On Mon, 3 Apr 2006, Toby DiPasquale wrote:

> 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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