Problems opening mail on this list

[Bob McConnell]

Paul,

The message you sent right after this one produced the same error in
Outlook as Andrew's.

Bob McConnell

-----Original Message-----
From: owner-freebsd-questions at freebsd.org
[mailto:owner-freebsd-questions at freebsd.org] On Behalf Of Paul Schmehl
Sent: Tuesday, June 10, 2008 6:35 PM
To: freebsd-questions at freebsd.org
Subject: Re: Problems opening mail on this list

--On Tuesday, June 10, 2008 15:32:45 -0600 Chad Perrin
<perrin at apotheon.com> 
wrote:

> On Tue, Jun 10, 2008 at 03:34:59PM -0500, Paul Schmehl wrote:
>> --On Tuesday, June 10, 2008 16:23:32 -0400 Andrew Berry
>> <andrewberry at sentex.net> wrote:
>>
>> > On 10-Jun-08, at 1:07 PM, Paul Schmehl wrote:
>> >
>> >> Andrew, maybe you could send a signed message, state in the body
>> >> that it was signed, and then I can look at the headers and tell
you
>> >> what's going on.
>> >
>> > Here is a message which has been signed.
>> >
>>
>> There's no sig attached, so it's getting stripped off somewhere.
>> This line in the headers looks to be the culprit:
>> X-Content-Filtered-By: Mailman/MimeDel 2.1.5
>>
>> That will strip all attachments, including S/MIME.
>
> My PGP signatures seem to come through just fine, however.

Yes it did.  And it appears that this is the reason:

Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
	protocol="application/pgp-signature";
boundary="H1spWtNR+x+ondvy"
Content-Disposition: inline

Andrew's is like this:
Content-Type: multipart/signed; boundary=Apple-Mail-1-746495031;
micalg=sha1;
	protocol="application/pkcs7-signature"
Mime-Version: 1.0 (Apple Message framework v924)
Date: Tue, 10 Jun 2008 16:23:32 -0400
References: <FF8482A96323694490C194BABEAC24A002D7BDEE at Email.cbord.com>
	<CE393FEB-BDB5-4D32-A179-D2EF03493542 at sentex.net>
	<FF8482A96323694490C194BABEAC24A002D7BEAC at Email.cbord.com>
	<8DFCF30B986212E9F5E6DE8E at utd65257.utdallas.edu>
X-Mailer: Apple Mail (2.924)
X-Spam-Scanner: SpamAssassin 3.000004 (http://www.spamassassin.org/) on
	batman.cs.uoguelph.ca
X-Spam-Score: hits=0.0
X-Spam-Level:
X-Spam-Tests: FORGED_RCVD_HELO,SPF_PASS
X-Spam-Status: Suspected
X-Scanned-By: MIMEDefang 2.63 on 131.104.94.198
X-Scanned-By: MIMEDefang 2.52 on 172.17.94.85
X-Content-Filtered-By: Mailman/MimeDel 2.1.5

Notice that his was processed through MIMEDefang twice and then Content 
Filtered by Mailman.  Also, his content type is 
protocol="application/pkcs7-signature" whereas yours is 
"application/pgp-signature".

There's also no Content-Disposition: line in Andrew's email headers, so
it's 
possible that absence of that line makes a difference as well.

By default, it appears that Mailman does not do content filtering.  It
also has 
pass rules (if filtering is enabled) for multipart/mixed,
multipart/alternative 
and text/plain.  So, it's possible that MIMEDefang is the culprit
instead.

-- 
Paul Schmehl
As if it wasn't already obvious,
my opinions are my own and not
those of my employer.
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