Microsoft KB Archive/934284

= E-mail messages that have certain 2007 Office documents attached are filtered by Forefront Security for Exchange Server =

Article ID: 934284

Article Last Modified on 4/2/2007

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APPLIES TO


 * Microsoft Forefront Security for Exchange Server

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SYMPTOMS
When you send e-mail messages that have certain 2007 Microsoft Office system documents attached, Microsoft Forefront Security for Exchange Server filters the e-mail message as unsolicited commercial e-mail (UCE). UCE is also known as spam.

You experience this problem when you send any of the following document types as an attachment:
 * Microsoft Office Excel 2007 (.xlsx)
 * Microsoft Office PowerPoint 2007 (.pptx)
 * Microsoft Office Word 2007 (.docx)



CAUSE
This problem occurs if both of the following conditions are true:
 * Forefront Security for Exchange Server is configured to scan .zip archive files.
 * Forefront Security for Exchange Server is configured to filter e-mail messages that contain .wmf files.

This problem occurs because the 2007 Office programs that are mentioned in the &quot;Symptoms&quot; section contain a preview window (Thumbnail) feature. This preview window is attached to the e-mail message as Thumbnail.wmf. The window is included in a .zip archive file together with the 2007 Office document.

Forefront Security for Exchange Server detects the Thumbnail.wmf file when it scans the .zip attachment to the e-mail message. Therefore, Forefront Security for Exchange Server filters the message that contains the .wmf attachment.



WORKAROUND
To work around this problem, configure the 2007 Office program not to save a preview picture together with the document. To do this, follow these steps:
 * 1) Open the document by using the appropriate 2007 Office program. For example, open the .xlsx file by using Excel 2007.
 * 2) Click the Microsoft Office Button, point to Prepare, and then click Properties.
 * 3) In the Document Properties list, click Advanced Properties.
 * 4) Follow these steps, as appropriate for the 2007 Office program that you are running:
 * 5) * Excel 2007
 * 6) *# In the  Properties dialog box, click the Summary tab.
 * 7) *# Click to clear the Save Thumbnails for All Excel Documents check box.
 * 8) * PowerPoint 2007
 * 9) *# In the  Properties dialog box, click the Summary tab.
 * 10) *# Click to clear the Save preview picture check box.
 * 11) * Word 2007
 * 12) *# In the  Properties dialog box, click the Summary tab.
 * 13) *# Click to clear the Save Thumbnails for All Word Documents check box.
 * 14) Click OK.

Additional query words: XADM Antigen

Keywords: kbspam kbtshoot kbprb KB934284

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