On March 31, 2015 7:49:53 AM EDT, Hector Santos <[email protected]> wrote:
>Don't quite get it, Scott.  There is no DMARC record so the 
>transaction would be "DMARC indeterminate" -- no DKIM signing policy.

I think it's called none, but the point is that as a third party sender, their 
setup can't get entangled with customer first party sender setup which might 
have DMARC. 

>If it did have a DMARC record, in order for this transaction to DMARC 
>pass, it would require relaxed alignments for SPF and DKIM:
>
>    adkim=r
>    aspf=r
>
>Correct?

Which is the default. 

>subdomains has more inherent "trust" than having completely different 
>main domains.   The problem of course, DMARC excludes this legitimate 
>3rd party signer possibility in its protocol.

I've yet to see a proposal to include it which is both executable and doesn't 
defeat the purpose of DMARC. I agree it's a problem, but one that so far 
doesn't have an appropriate technical solution. 

Scott K

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