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Re: Re: SUBMITTER is a bad idea

2004-06-05 11:17:09
On Sat, 5 Jun 2004, Cory Wagner wrote:

So, where does one find information on how to implement SES?

http://spf.pobox.com/spf.html

SES is just SRS for *all* outgoing mail, with an optimization that
omits the incoming domain when outgoing and incoming domain are the same.

So for instance, if mail from user(_at_)bar(_dot_)com is forwarded by foo.com,
the outgoing MAIL FROM is:

SRS0=fk3ex=I6=bar(_dot_)com=user(_at_)foo(_dot_)com

If foo.com does SRS for all outgoing mail, then mail from 
user(_at_)foo(_dot_)com also
looks like:

SRS0=SE8I3=I6=foo(_dot_)com=user(_at_)foo(_dot_)com

Which SES optimizes to:

SES0=SE8I3=I6=user(_at_)foo(_dot_)com

I use a Python implementation of SRS:

http://www.bmsi.com/python/pysrs.html

which I have not yet optimized for SES.  We have no long localparts so
doing SRS for everything works great in our case.

-- 
              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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