The body of plain text emails is blank

Two weeks ago, emails from one of our customers started having problems.

First, attachments would not show up in email messages, either in Outlook 2007 or OWA. I traced the problem to "malformed MIME content" (http://support.microsoft.com/kb/961940/en-us) and implemented a workaround (http://social.technet.microsoft.com/Forums/en-US/exchangesvrclients/thread/5ee6b1d2-865f-4c81-bb3e-b72d30d1845f) that entails creating a new Hub Transport Rule. This appeared to solve the problem of missing attachments.

Then last week, emails without attachments from this same customer now have nothing in the body of the email. The body is blank both in Outlook 2007 and OWA, and this is true for at least two recipients.

I looked at the headers of old emails that had no attachments (these emails came in fine), and compared the headers of new emails that had no attachments (these emails have blank bodies), and there are some large differences. Notice the "Content-Type." (See below)

 Old-no-attachment-email---edited.txt New-no-attachment-email---edited.txt

I suspect the customer has "upgraded" their email system and it is not working correctly, since we have changed nothing on our end. I am running Exchange 2007 SP1, and I won't be able to update to SP3 until at least this weekend.

Is there a short-term workaround or fix for this problem? Will updating to SP3 fix the problem?
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mmmfgAsked:
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mmmfgConnect With a Mentor Author Commented:
I removed the Hub Transport Rule that I created. I found some similar posts here on EE that sounded like my problem, and for them, removing the Hub Trasnport Rule eliminated the problem of blank email bodies. It does appear to have fixed blank email bodies in my case as well.

As for the missing attachment "malformed MIME" problem: this weekend I updated Exchange 2007 to SP3 and Rollup 4. I am waiting to see if the update has fixed this problem.
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apache09Commented:
There are known issues in Outlook 2007 and 2010 with Blank or mIssing Email Body

This is a result of Antvirus/Antispam/Malware Email Intergration.
Disabling this integration should resolved the problem

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mmmfgAuthor Commented:
This was the correct solution. Since implementing this solution we have not had any more problems.
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