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[ietf-dkim] Clarifying DKIM (etc.) expectations for mailing lists in the face of digests

2010-08-04 12:12:37
Folks,

As long as there is some effort to review what goals are being pursued, with 
respect to mailing lists, I'd like to raise an additional question:

For typical, modern mailing lists, a subscriber can choose between delivery of 
each message, as posted individually, versus delivery of batches of messages in 
a digest.

In the latter case, no one would reasonably expect a DKIM signature from a 
first 
(author/originator) sequence to survive.  Yet there seems to be some strong 
expectation that it will or should survive if the recipient happens to choose 
delivery on a per-message basis.

What is the security model that makes this expectation of preservation 
important 
and reasonable, given that it is so easily and whimsically violated by a common 
recipient-selectable setting?

d/
-- 

   Dave Crocker
   Brandenburg InternetWorking
   bbiw.net
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