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Has anyone else noticed something weird/wrong about how the "new" MSU mail
marks email subject lines for spam? 
 
We were having a discussion in the office today and I remarked on the fact
that I had not seen a single message with *****SPAM***** in its subject line
since the new mail system was put in place. That didn't seem right, so I
started investigating.
 
I logged in to mail.msu.edu, which I rarely use, normally using Outlook 2003
for IMAP access to all my mail. I did a search and found a message from
April that did indeed have *****SPAM***** in the subject line. While looking
at the message list, the first odd thing I noticed was that the subject did
not start with the asterisks and had the actual subject repeated, like this:
RE:  <https://mail.msu.edu/imp/message.php?mailbox=INBOX&index=38457> Old
Hardrock Question, *****SPAM***** RE: Old Hardrock Question
 
Having the spam marking inserted this way contradicts the Techbase articles
about spam processing, which have statements such as: "Suspected spam is
marked and delivered to the Inbox with "*****SPAM*****" prefixing the
subject line of the message."
 
I proceeded to open the message on mail.msu.edu and noticed something even
stranger--now in message view instead of mailbox view, the subject line at
the top of the message window no longer contained the *****SPAM**** marking
at all, instead being the normal:
Subject: 	 RE: Old Hardrock Question	
 
I went back to the mailbox view to check and sure enough, it still had
*****SPAM***** in the subject. How could webmail be showing two different
subject lines depending on how I looked at a message?
 
To check further, I went to Outlook and found the message in my IMAP
mailbox, which also showed no *****SPAM***** marking, regardless of whether
I was looking at the mailbox view or the message itself.
 
So, in Outlook I viewed the message headers, which showed the following
(some lines deleted):
 
Subject: RE: Old Hardrock Question
Date: Mon, 13 Apr 2009 07:06:04 -0700
Thread-Topic: Old Hardrock Question
From: Store CustomerService <[log in to unmask]>
To: "Chris Wolf" <[log in to unmask]>
X-Spam-Level: *****
X-Spam-Report: All incoming messages to mail.msu.edu are analyzed for
typical spam
 characteristics. See http://techbase.msu.edu/article.asp?id=11475 for
 additional report information.
 Content analysis details:   (5.8 points, 5.0 required)
 pts rule name              description
 ---- ----------------------
--------------------------------------------------
 0.0 HTML_MESSAGE           BODY: HTML included in message
 4.0 HTML_IMAGE_ONLY_32     BODY: HTML: images with 2800-3200 bytes of words
 1.8 MIME_QP_LONG_LINE      RAW: Quoted-printable line longer than 76 chars
X-Spam-Score: 5.8
Subject: *****SPAM***** RE: Old Hardrock Question

Notice in particular that there are two Subject: lines, the first and last
lines above, shown in bold. It appears that SpamAssassin instead of
replacing the Subject line as it used to do, is now adding a second Subject
line with the *****SPAM***** prefix.
 
Based on the examples above, having two subject lines clearly does not work
well with many email clients, including mail.msu.edu's own webmail
interface.
 
Did anyone else notice this unannounced change in the new mail system
behavior? I'm also curious as to how other client software is handling the
double subject lines.