[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
How do fix a good solution against spam..
- Subject: How do fix a good solution against spam..
- From: gsutter at zer0.org (Gregory Sutter)
- Date: Sat May 15 00:09:29 2004
On 2004-05-14 08:40 -0300, Fernando Schapachnik <fernando_(_at_)_mecon_(_dot_)_gov_(_dot_)_ar> wrote:
> As everybody is throwing in their favorite anti-spam solutions, here's mine:
> From the home page:
> ASK takes advantage of the fact that most spammers use invalid or
> fake "From:" address in their messages. When a new message arrives
> and the sender is unknown, ASK sends a "confirmation message"
> back, informing the sender that the original message has been
> queued, pending confirmation. When the sender confirms (a simple
> reply), ASK delivers the original message and adds the sender to a
> "whitelist". Further messages from this sender will be immediately
(I apologize for posting this O/T message.)
Here's a well-thought-out argument against systems of this type:
Challenge-Response Anti-Spam Systems Considered Harmful
Gregory S. Sutter The best way to accelerate Windows
mailto:gsutter_(_at_)_zer0_(_dot_)_org is at 9.8 m/s^2.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 155 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-security/attachments/20040515/9babdab5/attachment.bin
Visit your host, monkey.org