[ietf-dkim] Issue: clarifications needed for usage examples (Appendix A)

[J D Falk]

On 10/07/2008 08:53, "Siegel, Ellen" <esiegel at constantcontact.com> wrote:

> I know we're trying to avoid new issues, but I think we need some
> clarifications/extensions to the usage examples in Appendix A.
> 
> 1) In A.1, make the list of "other paths" more complete. In particular,
> add participation in mailing lists, and sending mail from external email
> clients:
> 
> "...Such paths could include MTAs at hotels or hotspot networks used by
> traveling users, web sites that provide "mail an article" features, user
> participation in mailing lists, or use of 3rd party mail clients that
> support multiple user identities."

+1

> 2) Add an example for dkim=unknown (or no record). All of the existing
> examples are for the use of "all" or "discardable". We need a clear
> example of where this is not a good idea, where a domain should publish
> "unknown" (or not publish at all).
> 
> Add new section:
> A.6 Domains with Independent Users and Liberal Use Policies
> When a domain has independent users and its usage policy does not
> explicitly restrict them to sending mail only from designated in-house
> mail servers (e.g. many ISP domains and even some corporate domains),
> then it is only appropriate to publish an ADSP record containing
> "unknown". Publishing either "all" or "discardable" will likely result
> in significant breakage because independent users are likely to send
> mail from the external paths enumerated in section A.1.

Not sure about the wording, but +1 to the need for a statement along these
lines.

-- 
J.D. Falk
Return Path

Work with me!
http://www.returnpath.net/careers/

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