On Apr 29, 2008, at 1:16 PM, Al Iverson wrote:
So, a potential way to address this without any sort of "tree
walking" functionality would be:
- As a sender, publish ADSP records for all domains/zones/fqdns you
know about
- Recommend that receivers reject mail from non-existing FQDNs used
in PRA or MFROM (or somesuch).
Disagree.
Recommend ensuring From header SMTP deliverability (based upon the
presence of SMTP discovery records) and ADSP compliance based upon
presence or absence of ADSP records. (Assuming the receiving domain
only considers addresses valid when SMTP deliverable.) ADSP is
referenced by email-address domains contained within the From header.
The MFROM (return-path) is not included within a DKIM signature. The
PRA is not related to assertions made in ADSP.
-Doug
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