On Thu, 4 Jan 2007, Don Lee wrote:
It is not clear on the web site, or in "common parlance" that
SPF is designed for, or to be used for, HELO. I am looking into
using it on HELO, and am getting pushback from admins that this
is an abuse of SPF, and not "supported".
Is there a definitive statement I can point to that declares that this
usage is OK?
RFC 4408 2.1/2
It is RECOMMENDED that SPF clients not only check the "MAIL FROM" identity,
but also separately check the "HELO" identity by applying the check_host()
function (Section 4) to the "HELO" identity as the <sender>.
The admins giving you pushback are clueless.
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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