On Thu, 31 Jan 2008, Michael Deutschmann wrote:
The most courteous thing a forwarder could afford to do in a
backscatter-intolerant and SPF-using world, is to apply SRS when forwarding
mail that came in with an SPF-pass, and to rewrite the return-path of all
other mail to <>, indicating that it is non-bouncable since it might be
forged.
I hate to tell you this, but most MTAs are run by people who have never
heard of rfc2821, and merrily reply to a MAIL FROM of <>, "Damn
the mail loops and full speed ahead!"
That doesn't mean it isn't courteous to mark them anyway. But these
same MTAs will submit you to a blacklist if you send them too many DSNs,
(even for mail from their own IPs!)
--
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.
-------------------------------------------
Sender Policy Framework: http://www.openspf.org
Archives: http://v2.listbox.com/member/archive/735/=now
RSS Feed: http://v2.listbox.com/member/archive/rss/735/
Modify Your Subscription:
http://v2.listbox.com/member/?member_id=2183229&id_secret=92152482-93e438
Powered by Listbox: http://www.listbox.com