[SURBL-Discuss] More spams with Zdnet redirector

Chris Santerre csanterre at MerchantsOverseas.com
Fri Apr 8 15:47:20 CEST 2005

>-----Original Message-----
>From: Jeff Chan [mailto:jeffc at surbl.org]
>Sent: Thursday, April 07, 2005 10:55 PM
>To: SURBL Discussion list
>Subject: Re: [SURBL-Discuss] More spams with Zdnet redirector
>On Thursday, April 7, 2005, 12:45:51 PM, Patrik Nilsson wrote:
>> At 00:13 2005-04-07 -0700, Jeff Chan wrote:
>>>On Wednesday, April 6, 2005, 11:58:31 PM, Nick Askew wrote:
>>> > Jeff,
>>> > So it seems that there is an obvious loophole in SURBL. 
>As long as the
>>> > spammer uses a legitimate business running a redirector 
>you will never 
>>> black
>>> > list them (perhaps the spammer could even set up their 
>own legitimate
>>> > redirector). This open redirector discussion for ZDNET 
>has been open for
>>> > several weeks now, they have had more than ample warning.
>>> > Nick
>>>No, it's not a loophole.  Programs like SpamAssassin and
>>>SpamCopURI correctly parse some redirection sites like
>>>g.msn.com and check the redirected-to site.
>> That workaround is part of the problem, not part of the solution.
>> If we encourage client implementations to work around the 
>problem in that 
>> way, we will always have:
>> 1. Clients that need to be updated with the latest 
>redirectors, unless we 
>> provide and encourage implementations to use a constantly 
>updated online 
>> source of redirectors.
>> 2. Major redirectors getting included in the special 
>work-arounds, like 
>> Google, and smaller ones not getting included.
>> If we believe that open redirectors are bad, we should not solve the 
>> problem by working around a few major ones that we are 
>currently aware of.
>> Patrik 
>Our solution is to detect and check the big ones, and try
>to get all of them to not be open to spammers.
>What's your solution?  Blacklisting all open redirectors?
>So no one should be able to mention them?

Thats EXACTLY what the new gray list will do. 

'If it appears in spam, list it'

(I can't take credit for the above tagline. Another nut came up with it
before me!)

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