On Feb 13, 2008, at 3:33 PM, Jim Fenton wrote:
Wietse Venema wrote:
Excuse my ignorance, but why limit DKIM (or SSP) to information
that is delivered via SMTP? They can work with any transport that
uses RFCx822 for content and that uses DNS for name resolution.
Interesting idea. In 4871, we do have the s= tag and the DKIM
Service Types registry. Perhaps SSP should specify which service
type(s) to which the record applies; for completeness we should
probably have a way of specifying multiple (service type, policy)
groups, although the only service type in the registry now is "email".
Jim,
The service type that could be noted in the key does will not work as
there are no defined key locations. The policy scope needs to be
within the policy record or reflected in the label used to locate the
record.
Depending upon the label works well, but then there might be a desire
to signal "cease and desist" when there are multiple policies. The
"cease and desist" state can be generally defined as the presence of
the policy record with the absence of the discovery record.
-Doug
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