Marc,
Since SPF does not address this scenario (right?), couldn't spammers just
use non-existant domains?
Any half decent filtering solution will check the return address for MX
record - and might go so far as to check the MX host will accept email
for the email address in question.
Regards,
Mark Anderson.
-------
Sender Permitted From: http://spf.pobox.com/
Archives at http://archives.listbox.com/spf-discuss/current/
Latest draft at http://spf.pobox.com/draft-mengwong-spf-02.9.5.txt
Wiki: http://spfwiki.infinitepenguins.net/pmwiki.php/SenderPermittedFrom/
To unsubscribe, change your address, or temporarily deactivate your
subscription,
please go to
http://v2.listbox.com/member/?listname(_at_)©#«Mo\¯HÝÜîU;±¤Ö¤Íµø?¡