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Re: [ietf-dkim] SSP - should r= be localpart only?

2006-02-22 10:58:12

On Feb 21, 2006, at 9:47 PM, SM wrote:
At 11:00 20-02-2006, Douglas Otis wrote:

What action is expected of the email-address domain owner when making the report?

It is to take whatever corrective action the person deems it necessary.

While the signing-domain can take effective actions, please attempt to list the actions the email-address domain owner may take?


Consider the effect of only having report vectors referenced from the email-address domain, rather than the signing-domain who is able to take effective action to correct a full range of problems that might be reported. Report references from the email-address domain unfortunately invites abuse reports when publishing open-ended policies. When the email-address domain owner publishes an open- ended policy, the likely corrective action would be to remove the report tag. So how does a signing-domain that also has an open-ended policy safely offer a report vector? They can't. So how does a email-address domain owner with an open-ended policy safely offer a report vector. They can't either.

A report vector acquired from the signing-domain would concern _only_ messages they have signed, and not messages that happen to contain an email-address within their domain. For domains where use of their email-address is critical, they will exclusively sign their own messages, which makes obtaining the report vector from the signing- domain an equivalent outcome. Having a report vector acquired from a signing-domain reference is the _only_ safe and reasonable means to provide this reporting feature and still permit open-ended policies.

-Doug



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