[UbuntuWomen] request for anti-spam workshop

Matthias Urlichs smurf at smurf.noris.de
Wed Aug 1 01:17:27 UTC 2007

Jacinta Richardson:
> With various options turned on such as:

	SMTP call-back

> Some individuals and very small businesses use various challenge
> response tools.

These tools are *broken* these days. Stay away.

The reason: More or less all the spammers use a fake sender address.
Some unrelated third person will therefore get an annoying message.
That's the first problem.

The second problem is that, more often than not, the third-party
recipient will click "Spam" on it. Your verification messages will then
itself be regarded as spam. Instead, they'll cause your email system to
be blacklisted, or legitimate queries will fail to arrive.

Matthias Urlichs   |   {M:U} IT Design @ m-u-it.de   |  smurf at smurf.noris.de
Disclaimer: The quote was selected randomly. Really. | http://smurf.noris.de
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Toast lands butter side down, Cats land the right way up, So what happens if
you butter a cat?

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