Le 12/01/2017 à 04:10, Richard Clayton a écrit :
publishing a DKIM key without DMARC is NOT a policy statement !
True.

This is no my own designing. That's a public standard. DKIM policies can be
published in the DNS as TXT records in several forms:

no -- use of DKIM is not a policy statement ... that's precisely why
DMARC exists
Yes, but a policy _can_ be put forward in DNS without DMARC; either of these sets a policy:

_adsp._domainkey.example.org.   86400   IN      TXT     "dkim=all"
_asp._domainkey.example.org.    86400   IN      TXT     "dkim=all"
_domainkey.example.org.         86400   IN      TXT     "o=-\;"

DMARC is better but it is not the only existing solution.

Yves.

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