On Fri, 21 Oct 2005, Dan Field wrote:
Some say the forwarder is wrong, other disagree... but until it is resolved
you cannot delete on fail without risking losing valid e-mail.
Since the *receiver* has set up such forwarders, if any, the *receiver*
can safely reject on SPF fail if he uses no such forwarders, or has
whitelisted them.
Only in the case where the receiver has lost track (or never kept track)
of their forwarders, and has no clue which of them they still want to work,
is it advisable to not reject on fail. Large email providers often
fall into that category, of course, since their subscribers may
setup such forwarders without the email providers knowlege. But they *could*
provide an interface for individual subscribers to list any non-SRS forwarders
and opt-in to SPF checking.
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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