[ietf-dkim] Issue: Deployment Guide Section 6.1/6.5 (ADSP/Forwader) conflict
jdfalk-lists at cybernothing.org
Fri Oct 16 11:05:05 PDT 2009
Ian Eiloart wrote:
> That seems sensible to me. So lists should not forward email that they're
> about to render 'discardable' by breaking the signature. Instead, they
> should reject (5xx) or bounce (DSN) the message. Presumably, a bank wants
> to know if it has a bad email address for a customer.
> Of course, if you
> aren't going to break the signature, or are rewriting the From: address,
> then it's OK to forward the email.
> Oh, and if the list sees incoming mail
> already has a broken signature, or none at all, then it should be discarded
> by the list software (or its MTA).
> The treatment of email with authors in a domain with 'dkim=discardable'
> policy seems absolutely straightforward. What's more complicated is the
> treatment of email with authors in a domain with 'dkim=all' policy. There's
> no guidance about handling such mail.
Agreed; we need more operational experience here.
Return Path Inc
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