[ietf-dkim] Issue: Deployment Guide Section 6.1/6.5 (ADSP/Forwader) conflict

[J.D. Falk]

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.

Yep.

> 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.

Probably.

> 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).

Yep.

> 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.

-- 
J.D. Falk
Return Path Inc
http://www.returnpath.net/