On 04/29/2010 01:12 PM, SM wrote:
> At 11:12 29-04-10, Michael Thomas wrote:
>> With respect to DKIM, anybody who filters based on broken signatures without
>> any (or little) other input pretty much deserves the false positive
>> rate they're
>> complaining about.
>
> This mailing list removes the DKIM signature of the poster.  An ADSP
> policy of "all" means that all mail from the domain is signed with an
> Author Domain Signature (d= tag).  As there isn't a valid DKIM
> signature, the message can get rejected.
>
> If the ADSP policy is "discardable" and there isn't an Author Domain
> Signature, the mail can be discarded, i.e. you don't even want a rejection.
>
> If this mailing list did not remove the DKIM signature, the receivers
> would still get an invalid signature as the mailing list modifies the
> subject line and adds a footer.  The ADSP policy will be interpreted as above.

Note that I didn't say anything about ADSP in what I wrote. ADSP discardable
is a *lot* of "other input", IMO.

Mike
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