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Re: [ietf-dkim] DKIM and mailing lists

2006-01-19 16:21:49
Scott Kitterman wrote:
On 01/19/2006 15:50, Michael Thomas wrote:

Earl Hood wrote:

On January 19, 2006 at 03:10, "Hector Santos" wrote:

Sender-Signing Policy (SSP):

       NONE (no policy)
  o=?  WEAK (signature optional, no third party)
  o=~  NEUTRAL (signature optional, 3rd party allowed)
  o=-  STRONG  (signature required, 3rd party allowed)
  o=!  EXCLUSIVE (signature required, no 3rd party)
  o=.  NEVER  (no mail expected)
  o=^  USER

...

Wouldn't be easier of the signer can assert a role so such checks
are not necessary by a list server?

No. SSP is not for signed mail, it's for unsigned mail.


If it's a third party signature you still need to check SSP for EXCLUSIVE policy.

That doesn't alter what I said. You fundamentally cannot get out of
making checks if you're missing a (first party) signature. That's
SSP's purpose in life.

                Mike
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