ietf-dkim
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Re: [ietf-dkim] Case for ADSP "dkim=except-mlist"

2009-10-16 12:02:52

On Oct 16, 2009, at 6:33 AM, Michael Deutschmann wrote:

I'd like to more emphatically state the case for adding a
"dkim=except-mlist" policy to ADSP.  It will soon become a practical
issue for me, since my mailserver software (Exim) is going to support
DKIM in its next version.

Without it, I'd have to use "dkim=unknown", which is effectively no  
ADSP
at all.

To review, "dkim=except-mlist" would mean:

I sign everything leaving my bailiwick, but may post to mailing lists
that break the signature.  You are *on your own* in telling the
difference between mailing list mail (which may be good despite a
broken signature) and directly sent mail (that is always signed).  If
you can't tell, then treat as dkim=unknown (ie: assume a message is
ML traffic unless you know otherwise.).

(Incidentally, anyone have a better name for this policy?)

dkim=all.

dkim=all says that you sign all mail you send, and nothing more. The
difference between that and what you write above for a receiver is
nil, I think.

Cheers,
  Steve
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