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RE: [ietf-dkim] ISSUE 1525 -- Clarification about posting by first Author

2008-01-22 13:00:12
Date: Tue, 22 Jan 2008 14:19:20 -0500
From: johnl(_at_)iecc(_dot_)com
To: robert(_at_)barclayfamily(_dot_)com
CC: ietf-dkim(_at_)mipassoc(_dot_)org
Subject: RE: [ietf-dkim] ISSUE 1525 -- Clarification about posting by first 
Author

By asserting that any mail that claims authorship from a domain I 
control must be signed by me I'm not making any particular assertion 
about why any other mail might not fit that policy. Just the fact that 
it does not.

But here we go again.  Why should anyone care about your policy?  We don't 
care about your policy, only about the mail that shows up here, and it is 
most definitely not my job to enforce rules that you claim that apply to 
your users.

A message shows up on a mailing list with a From: address in your domain. 
Your SSP says to discard it.  Tough noogies, I won't.  If an unsigned 
message were otherwise dubious, and you said you signed everything, that 
might tip the balance to filtering it, but not because you told me to.

R's,
John

But if you already have enough data to make a decision about a message's 
disposition in that case, you also have enough data to make a decision about 
that message's disposition regardless of any SSP policy that anyone might 
express. To a system implementing the receiver policy you outlined above SSP is 
only useful at all for the messages where you don't have enough information to 
make a decision.

So the question in this case really comes down to whether the policy we are 
discussing (or any particular SSP statement) is useful, or at least 
non-harmful, when you are evaluating a message for which your existing policies 
do not provide a completely efficacious decision algorithm. In any case where 
your current policies about mail acceptance already work well and provide the 
answers you want why would you bother to layer extras on top anyway?

Robert



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