Graham Murray wrote:
Jon Callas <jon(_at_)callas(_dot_)org> writes:
You can say that you never send mail from a domain with SPF.
SPF operates on the RFC2181 envelope, so with SPF you can state that a
domain will never legitimately appear in the SMTP MAIL FROM: (or
EHLO). It offers no mechanism to say that the domain will not be used
in any RFC2822 From:, Sender:, Resent-From: etc
Ah. I didn't know that - thanks.
But even if SPF doesn't provide the exact thing that 1365 requests,
we still have to address whether or not this feature is in-scope for
DKIM (which is different from wanting it done somewhere).
Stephen.
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