Microsoft KB Archive/928081

= Antigen 9.0 for Exchange or Antigen 9.0 for SMTP Gateways incorrectly detects a uuencode file as a virus =

Article ID: 928081

Article Last Modified on 3/14/2007

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APPLIES TO


 * Microsoft Antigen for Exchange
 * Microsoft Antigen for SMTP Gateways

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SYMPTOMS
When you send an e-mail message that contains a uuencode file attachment, Microsoft Antigen 9.0 for Exchange or Microsoft Antigen 9.0 for SMTP Gateways incorrectly detects the uuencode file as a virus. Additionally, the uuencode file may be deleted depending on the Antigen 9.0 configuration settings.

Note This problem does not occur in earlier versions of Antigen.



CAUSE
This problem occurs because there is no fixed standard for uuencode file creation. Therefore, for security reasons, Antigen 9.0 follows an approach of detection instead of letting the uuencode file pass.



Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Antigen 9.0 for Exchange service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
There are no prerequisites for installing this hotfix.

Restart requirement
This hotfix will stop and then restart the SMTP service and the Microsoft Exchange Information Store service. However, if the services cannot be stopped, or if files are left open, you may have to restart the computer.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Antigen 9.0 for SMTP Gateways


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about the terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbexpertiseadvanced kbbug kbfix kbhotfixserver kbqfe kbpubtypekc KB928081

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