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sci.geo.satellite-nav (Global Satellite Navigation) (sci.geo.satellite-nav) Discussion of global navigation satellite systems (GNSS). Topics include the technical aspects of GNSS operation, user experiences in the use of GNSS, information regarding GNSS products and discussion of GNSS policy (such as GPS selective availability).

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Old November 2nd 09, 06:48 AM posted to sci.geo.satellite-nav
GSV Three Minds in a Can
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Bitstring , from the wonderful person
Wolfgang S. Rupprecht said

Sam Wormley writes:
All USENET news uses the Network News Transfer Protocol (NNTP)
No filtering. Individual ISPs (operating NNTP servers) may do
filtering by newsgroup category. For example ATT is no longer
supporting binary newsgroups.

That is the problem in a nutshell -- NNTP (and SMTP) have no real
verification of the "From: " address. Any filtering that is done by
individual sites is very ad-hoc and long after the fact.

but in most cases following the 'bang path' back will get you to the
right ISP. Yours appears to have started life at nnrp1.nntp.sonic.net.
Yes, that can be spoofed, but typically isn't.

Personally, I'd welcome a change that requires cryptographically signed
messages and headers where signatures that aren't generated by the true
owner of the email address are junked. My feeling is we'd see a lot
less spam if spammers got one shot at spam before the account was closed
and ISP's that allowed revolving door spam accounts were shunned.

IME 90%+ of the obvious spam is injected via googlegroups. Google takes
no action at all when advised of an offender. Most of us have quit
trying (and just KF everything from that source).

GSV Three Minds in a Can
15,621 Km walked. 2,882 Km PROWs surveyed. 52.1% complete.

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