[51242] in North American Network Operators' Group

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Re: IETF SMTP Working Group Proposal at smtpng.org

daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Wed Aug 21 23:19:38 2002

To: Brad Knowles <brad.knowles@skynet.be>
Cc: nanog@nanog.org
In-Reply-To: Your message of "Thu, 22 Aug 2002 01:08:52 +0200."
             <a05111b2cb989cd22ca9e@[146.106.12.76]> 
From: Valdis.Kletnieks@vt.edu
Date: Wed, 21 Aug 2002 23:16:39 -0400
Errors-To: owner-nanog-outgoing@merit.edu


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On Thu, 22 Aug 2002 01:08:52 +0200, Brad Knowles <brad.knowles@skynet.be>  said:

> 	It's bad enough waiting for DNS responses so that you can 
> determine whether or not the envelope sender domain even exists.  Now 
> you want to slow down every single e-mail transaction by many, many, 
> many orders of magnitude so that you can do a callback on each and 
> every connection?!?

Worse yet, under his proposal, you're calling back to a callback address
provided by the spammer on the MAIL FROM, to verify a spammer-provided token.
What's wrong with this picture?



-- 
				Valdis Kletnieks
				Computer Systems Senior Engineer
				Virginia Tech


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