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E-mail recipients who are listed in the BCC box can be viewed by e-mail recipients who are listed in the To and CC boxes when you send a multi-part e-mail message by using Outlook Express 6.0

Article ID: 843555 - View products that this article applies to.

SYMPTOMS

Assume you configure Microsoft Outlook Express to break apart e-mail messages larger than a specific size. For example, you specify 60 kilobytes (KB) in the Break apart messages larger than option in the Properties dialog box for the e-mail account.
When you send an e-mail message that is larger than 60 KB by using Outlook Express 6.0, the e-mail message is sent as a multipart message. If you have also included e-mail recipients in the BCC field of the e-mail message, e-mail recipients who are listed in the To field and in the CC field of the multi-part e-mail message may be able to view the e-mail recipients who are listed in the BCC field if they copy the e-mail message to the desktop, and then open the e-mail message by using Notepad.

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RESOLUTION

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

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

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

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language. The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.

   Date         Time   Version            Size    File name
   -----------------------------------------------------------
   02-Jul-2004  14:51  6.0.2800.1455     596,480  Inetcomm.dll

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Installation information

After you install this hotfix, you must modify the following registry subkey:

HKEY_LOCAL_MACHINE\Software\Microsoft\Outlook Express\

To do this, follow these steps:

Click Start, click Run, type regedit, and then click OK.
In Registry Editor, locate the following Registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Outlook Express\
.
Click Edit, click New, and then click key.
Type Hotfix for the key name.
Right-click hotfix, click New, click DWORD Value, and then Type Q843555 for the DWORD Value name.
Right-click Q843555, and then click Modify.
Type 1 in the Value Data field, and then click OK.
Note To make this hotfix unavailable, you must change this value to 0.
Quit Registry Editor.