[ietf-dkim] Lists "BCP" draft available

[Roland Turner]

On 24/05/2010 00:35, John R. Levine wrote:

>
>> The only thing that leaves are non-participant MLMs and there really isn't much to be done with them.
>>      
> We have one concrete failure scenario, in which someone who publishes
> dkim=discardable sends mail to a MLM that as usual breaks the signature, a
> subscriber's mail system carefully follows the ADSP and rejects that mail,
> causing the subscriber to be bounced off the list.  (This really happened,
> on an IETF list.)  The advice is obvious a) put a shim in front of your
> MLM to reject discardable mail and b) the usual advice not to use ADSP at
> all, but it definitely needs publishing.
>
> I'm surprised we haven't seen that problem on this list, since we have at
> least one subscriber whose domain publishes dkim=discardable.  I keep
> having to fish his mail out of the spam folder.
>    
Surely the stance of a dkim=discardable sender is that it is absolutely 
OK to discard affected messages if there is any reason at all for doubt 
and that, therefore, "non-participant" MLMs aren't, actually, breaking 
anything.

- Roland