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RE: Spammers answering TMDA Queries

2007-10-04 13:37:08
I fail to see your point here.

Anyone can deploy DKIM, there is nothing unfair about the DKIM architecture.

The 'unfairness' that you appear to be complaining about is that DKIM solves a 
problem that only targets a relatively small number of Internet domains, 
although the effects of that attack are seen by everyone. 

Impersonation of a trusted brand is always going to assit a social engineering 
attack if this is possible. I do not understand the ideological calculus under 
which we should do nothing to protect consumers against attacks of this nature 
because we can't all have a trusted brand.

-----Original Message-----
From: Keith Moore [mailto:moore(_at_)cs(_dot_)utk(_dot_)edu] 
Sent: Thursday, October 04, 2007 3:39 PM
To: Hallam-Baker, Phillip
Cc: Fred Baker; ietf(_at_)ietf(_dot_)org
Subject: Re: Spammers answering TMDA Queries

Hallam-Baker, Phillip wrote:
Absolutely, and in fact I see mailing list management as a natural
early adopter for DKIM filtering.

the problem I have with DKIM filtering is that it is only 
effective for domains that can reasonably insist that all of 
the mail originated by
users at that domain go through that domain's submission 
servers.   this
is a corner case, not the general case.   sure the spammers will learn
to not use DKIM domains, but they'll just move to other 
domains, and the vast majority of domains won't be able to 
use DKIM without seriously impairing their users' ability to 
send mail.  of course, some of the large ISPs and MSPs like 
it that way. 

frankly I don't think IETF should have backed a proposal that 
was so unfairly biased toward a particular business model.

Keith



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