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Re: [ietf-dkim] DKIM charter (Should DKIM directly prevent spoofing?)

2005-11-16 11:36:03

On Nov 16, 2005, at 12:00 AM, Stephen Farrell wrote:
Doug,

I've read your mail twice now and I honestly cannot see
what's there that really needs to be addressed in terms
of potential changes to the charter.

A claim made in the charter of detecting spoofing depends upon a comparison of the signing-domain with the email-address domain. This suggests the email-addresses has been constrained to the transport when DKIM is advertised as a MTA to MTA mechanism. It seems greater progress will be made excluding this highly contentious aspect. Many hold unwarranted expectations that email-address constraints will abate abuse, however such constraints will also dramatically change the way email is used. Why not defer the policy mechanisms related to email-addresses? Once MUAs are able to track signing-domains, the need for any email-address constraint disappears.

To offer a fast and comprehensive response, a BCP for domains under attack could be created. This should include use of DKIM and limitations on the links, as well as methods of recognition independent of what _may_ be visible. We would be happy to provide a free listing service to publish those that meet the requirements of such a BCP. Would that get the policy debate off the table?

-Doug

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