Messages in this thread | | | From | alano@summanul ... | Subject | Re: vger weirdness | Date | Mon, 17 May 1999 13:49:22 -0700 |
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> On Sun, 16 May 1999, Matti Aarnio wrote: > > > My opinnion about considering "X-UIDL:" as a sign of spam is that > > the idea is misguided. All in all, an evolutionary view at the > > spammers can show that for every *simple* countermeasure we use > > against some simple signature characteristics, the spammers will > > adapt fairly quickly. The only truly effective way to block the > > spammers is to have message content analysing system which does > > recognize spams out of non-spams. > > Until now, I have never gotten a single message with an X-UIDL header that > was not spam. The common spamming software that people use that adds a > bunch of bogus headers also always adds an X-UIDL header for some reason. > I suspect that this is because the authors know little about email and > simply inspected the email that they downloaded from their ISP as an > example of how to construct headers.
Pegusus mail adds these headers as well. (Pegasus is a common free e-mail client for Windows.)
> I have modified my filtering rules for kernel list mail to get around this > particular check. BTW, I do not reject such mail, I simply freeze it > until I can inspect it.
Better yet, just check for "linux-kernel" in the "To:" or "Cc:" header lines. I used that on perl5-porters and it dropped the spam to almost zero. (Except for the stuff coming from perl-bug, but that is another story...)
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