RE: anti-spam filtering on this list? challenge responses?

It only replies to the one person that sent it, not the whole list.
Automated response is a tool that people "with responsibilities" use to make
sure that those emailing them know they aren't being ignored. 
 
Here is a link that actually has something useful, not just eggheads
dreaming of a computer literate society... SpamBayes HYPERLINK
"http://spambayes.sourceforge.net/"http://spambayes.sourceforge.net/ .If you
don't like automated responses you can train it to send it to your junk
folder. This way you will never have the sorrow of dealing with 1 little
email. You won't even have to click delete! Fancy that! 
If we were getting 200 "I'm not ins" then sure that's a problem. One email
is not a problem and the whole group shouldn't have to change because you
have enough time to complain! You can always remove yourself from the list,
that will solve it as well. 
 
Jason

-----Original Message-----
From: Jason Self [mailto:[email protected]] 
Sent: Thursday, July 21, 2005 5:02 PM
To: SeattleWireless Development List
Subject: Re: anti-spam filtering on this list? challenge responses?


I agree. C/R system should NOT be used. The URLs you gave provide perfect
examples of why.
 
For those unfortunate enough to have a C/R system thrust upon them by an
organization, I feel very sorry for them & agree that something should be
done with the system to prevent it from willy-nilly responding to each &
every person on a mailing list. 
 
On 7/21/05, Haudy Kazemi <HYPERLINK
"mailto:[email protected]"[email protected]> wrote: 

At 02:30 PM 7/21/2005 -0700, you wrote:
>Why don't you just delete it? Has the U of Minnesota thought of that one? 
>Instead you make more email about the email you don't like. Chances are you
>will get another autoreply by complaining.
>Rather then have him change something that he obviously needs why don't you
>do that simple 1-click motion and delete it. 
>Jason

This has nothing do with with the U of MN and my comments in regards to the
UMN antispam system were solely to present a tangential alternative method
of handling spam filtering that does not require challenge-response.  Those 
comments were separate from the original issue of autoresponders replying
to list-generated email.  (And yes I know I can delete such autoresponder
messages.  It doesn't make poorly designed autoresponders any less 
unwanted...kinda like spam in first place.)

Here are some 3rd party comments on the issue of autoresponders for spam
filtering:

HYPERLINK
"http://linuxmafia.com/faq/Mail/challenge-response.html"http://linuxmafia.co
m/faq/Mail/challenge-response.html 
HYPERLINK
"http://64.233.167.104/search?q=cache:www.iki.fi/era/mail/autoresponder-faq.
h"http://64.233.167.104/search?q=cache:www.iki.fi/era/mail/autoresponder-faq
.h
tml+autoresponders+mailing+lists&hl=en 
HYPERLINK
"http://www.spamcop.net/fom-serve/cache/329.html#CR"http://www.spamcop.net/f
om-serve/cache/329.html#CR

---copy/paste---
Challenge/response spam filtering
   Description: This "selfish" method of spam filtering replies to all 
email with a "challenge" - a message only a living person can
(theoretically) respond to. There are several problems with this method
which have been well known for many years.

      1. Does not scale: If everyone used this method, nobody would ever 
get any mail.
      2. Annoying: Many users refuse to reply to the challenge emails,
don't know what they are or don't trust them.
      3. Ineffective: Because of confusion about these emails, many of
them are confirmed by people who did not trigger them. This results in the 
original malicious email being delivered.
      4. Selfish: This is the problem we are mainly concerned with. By
using challenge/response filtering, you are asking innumerable third
parties to receive your challenge emails just so that a relatively few 
legitimate ones get through to the intended recipient.

   SpamCop abandoned this method of filtering after a short test period in
2001. Another site discussing the problems with challenge/response:
Challenge-Response Anti-Spam Systems Considered Harmful 

   Solution: Do not use challenge/response filtering. Although it may stop
most unwanted email for the person shielded by it, it generates more
unwanted email for others.

   Since more and more sites will rightly block these challenge emails, 
you can never be sure they will reach their target even when they are not
misdirected themselves. So these systems will lose legitimate mail in an
attempt to stop unwanted mail.
---end of copy/paste---
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