William Herrin bill at
Sat Feb 20 01:20:36 UTC 2010

On Fri, Feb 19, 2010 at 3:30 PM, Rich Kulawiec <rsk at> wrote:
> Barracuda's engineers apparently think
> that using SPF stops backscatter -- and it most emphatically does not.
> Reject gooooood, bounce baaaaaaad. [1]

Whine all you want about backscatter but until you propose a
comprehensive solution that's still reasonably compatible with RFC
2821's section 3.7 you're just talking trash.

"If an SMTP server has accepted the task of relaying the mail and
later finds that the destination is incorrect or that the mail cannot
be delivered for some other reason, then it MUST construct an
"undeliverable mail" notification message and send it to the
originator of the undeliverable mail (as indicated by the

Bill Herrin

William D. Herrin ................ herrin at  bill at
3005 Crane Dr. ...................... Web: <>
Falls Church, VA 22042-3004

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