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

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.

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it 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 Internet Explorer 6 service pack that contains this hotfix.

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

http://support.microsoft.com/default.aspx?scid=fh;[LN];CNTACTMS

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. 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

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:
  1. Click Start, click Run, type regedit, and then click OK.
  2. In Registry Editor, locate the following Registry key:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Outlook Express\

    .
  3. Click Edit, click New, and then click key.
  4. Type Hotfix for the key name.
  5. Right-click hotfix, click New, click DWORD Value, and then Type Q843555 for the DWORD Value name.
  6. Right-click Q843555, and then click Modify.
  7. Type 1 in the Value Data field, and then click OK.
    Note To make this hotfix unavailable, you must change this value to 0.
  8. Quit Registry Editor.

STATUS

Microsoft has confirmed that this is a problem in Microsoft Internet Explorer 6.

The information in this article applies to:

Last Reviewed:8/20/2004 (1.0)
Keywords:kbQFE kbIE600preSP2fix kbfix kbbug KB843555 kbAudITPRO