On Mon, Mar 02, 2009 at 11:01:58AM -0800, Dave CROCKER <[email protected]> 
wrote:
> Folks,
> 
> I believe there was only one response to Murray's query.  His request was not 
> from idle curiosity.
> 
> There is a serious discussion underway, looking for DKIM features that are 
> clearly essential and those that might not be.  This requires feedback from 
> the 
> folks using DKIM.  Like yourselves.
> 
> Dkim-milter is a significant, free resource.  It really is not asking all 
> that 
> much of those benefiting from this free software that they (yoou) provide 
> some 
> feedback about the system is enables.
> 
> Please reply to Murray's survey, indicating the features you rely on now.  
> Feel 
> free also to indicate the ones you do not expect to ever use.

Frankly, I don't see myself NEVER using any of these features. With that
said, if we're framing it as essential vs. non, I'd say i= is essential,
and g= is possibly so (although I don't know if it's gained much
deployment).

q= becomes essential the moment a key query mechanism that isn't DNS
becomes available. Whether one will is harder to say. If DNSSEC finally
gets moving, the impetus to do so may not be there, but the potential
use cases are myriad.

In my estimation, x= and t= are non-essential but useful. z= is
essential for debugging. I don't see a use for n=, but others might.

l= is potentially useful, albeit controversial, and far from perfect--
it's really only reliable for its intended purpose when dealing with
messages with a single plain-text body part. Except for corner cases,
I'll never deploy it at my day job where people use HTML email almost
exclusively.

> > In signatures:
> >     x= (signature expiration)
> >     t= (signature timestamps)
> >     l= (body lengths)
> >     i= (signing identity)
> >     q= (query method)
> >     z= (original signed header set)
> > 
> > In keys:
> >     g= (key granularity; restricting keys to specific users)
> >     n= (free-form comment)

-- 
Mike Markley <[email protected]>

I know not with what weapons World War III will be fought, but World
War IV will be fought with sticks and stones.
- Albert Einstein.

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