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RE: could someone please try the Milter; SPF guess; an update on macros

2003-11-07 18:59:41
I've make a couple quick modifications to the Perl Sendmail Milter and
the new version is attached.  It hasn't been thoroughly tested, but
seems to be working on my server.

I'll try to spend a little more time cleaning it up in a couple days
when I (hopefully) have a little more time.

-Stuart


-----Original Message-----
From: owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
[mailto:owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com] On Behalf Of Meng 
Weng Wong
Posted At: Thursday, November 06, 2003 10:34 AM
Posted To: SPF-Discuss
Conversation: [spf-discuss] could someone please try the Milter; SPF
guess; an update on macros
Subject: [spf-discuss] could someone please try the Milter; SPF guess;
an update on macros


Hey, guys, I just realized I'm seeing Eric Allman tomorrow night, so it
would be really useful if someone could test the Milter against the
latest version of Mail::SPF::Query available at

  http://spf.pobox.com/Mail-SPF-Query-1.7pre3.tar.gz

The milter is at

  http://spf.pobox.com/sendmail-milter-spf-1.0.pl

The API should be compatible but I don't want any surprises.

If you can figure out a way to prepend headers, it would be really
interesting to see Received-SPF and X-SPF-Guess headers.  I've been
putting those headers in my messages and it's a lot of fun.  X-SPF-Guess
is a fantastic false-positive detector.  The only time it's wrong, the
domain is already in a bunch of blacklists anyway:

    Received-SPF: unknown: domain of
b(_dot_)platinummember(_dot_)0-26331aa-3170(_dot_)wywy(_dot_)com(_dot_)-yyyyy(_at_)13(_dot_)pn04(_dot_)com
 does not
designate permitted senders
    X-SPF-Guess: pass: best guess: seems reasonable for
b(_dot_)platinummember(_dot_)0-26331aa-3170(_dot_)wywy(_dot_)com(_dot_)-yyyyy(_at_)13(_dot_)pn04(_dot_)com
 to mail
through 69.6.27.62
    X-Pobox-Antispam: dnsbl/blackholes.easynet.nl returned DENY: for
69.6.27.62(13.opn03.com)
    X-Pobox-Antispam: dnsbl/sbl.spamhaus.org returned DENY: for
69.6.27.62(13.opn03.com)
    X-Pobox-Antispam: rhsbl/bulk.rhs.mailpolice.com returned DENY: found
13.pn04.com
    X-Pobox-Antispam: rhsbl/spamdomains.blackholes.easynet.nl returned
DENY: found 13.pn04.com

The core mechanisms for SPF have stabilized: A MX PTR.

The new macro magic introduced by Philip Gladstone is moving like a
whirlwind through the other mechanisms, and when things die down, we can
expect that

  rhs
  ptrhs
  localpart
  pi

will be replaced by

  exists
  exec

I only expect very unusual domains to use those mechanisms anyway so
most people should feel free to keep publishing records using a, mx, and
ptr.

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Attachment: sendmail-milter-spf-1.1.pl
Description: sendmail-milter-spf-1.1.pl

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