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RE: Is Return-Path as available as we think?

2004-01-27 11:24:12
-----Original Message-----
From: wayne [mailto:wayne(_at_)midwestcs(_dot_)com]

Well, to make long things short, I think a decent survey needs to be
done, by actual people receiving actual mail, and not by looking at
NANA*.

Such a survey is going to be hard to do because the Return-Path: is
only supposed to be added on final delivery.  So, you can't just ask
someone that sends, forwards, or receives lots of email, you have to
ask lots of different people.  NANAS might not be the perfect place to
check, but it isn't a bad start.  I had also suggested the SA spam
archive and spamarchive.org

How about I fire up a mail message to some of my sysadmin friends,
and ask them to specify which mailer they use and test for the existance
of the header on my behalf, and you do the same. I can test qmail,
postfix and exchange myself:

qmail    1.03     - compliant
postfix  2.0.12   - compliant
Exchange 2000 SP3 - compliant
Exchange 5.5 SP4  - compliant

Folks, if you're interested in helping please check your mail system
- check what MTA is doing local delivery at your site(s) and specify:

A. make and version
B. whether it adds a "Return-Path:" header to messages INBOUND
   FROM THE NET

We don't have to reach 100% of the MTAs - we just have to see to it
that there are enough that 90%-95% of the mail gets delivered using
compliant mailers.

-- Arik

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