Hi,
it is not true that DMARC relies solely on SPF authentication.
OLD
* SPF, [RFC7208], which can authenticate both the domain found in an
SMTP [RFC5321] HELO/EHLO command (the HELO identity) and the
domain found in an SMTP MAIL command (the MAIL FROM identity). As
noted earlier, however, DMARC relies solely on SPF authentication
NEW
* SPF, [RFC7208], which can authenticate both the domain found in an
SMTP [RFC5321] HELO/EHLO command (the HELO identity) and the
domain found in an SMTP MAIL command (the MAIL FROM identity). As
noted earlier, however, DMARC uses only the MAIL FROM identity
Best
Ale
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