You may receive a "The message affected by this rule can't be sent on behalf of another user" error message when you create a server-based rule to forward an e-mail message as an attachment in Exchange Server 2003 (900089)

SYMPTOMS

Consider the following scenario. In Microsoft Office Outlook 2003, you create a server-based rule to forward an e-mail message as an attachment. Then, a user sends you a signed e-mail message. In this scenario, the e-mail message is not forwarded. Additionally, you may receive the following error message:

The message affected by this rule can't be sent on behalf of another user.

When signed or unsigned messages are sent to you after you receive this error message, the rule does not work. The rule works only after you re-create the rule.

RESOLUTION

Hotfix information

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 Microsoft Exchange Server 2003 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 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

Because of file dependencies, this hotfix requires Microsoft Exchange Server 2003 Service Pack 1.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other software updates.

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 tool in Control Panel.

   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   30-Jun-2005  01:57  6.5.7233.32     3,261,952  Mdbmsg.dll       
   04-Jun-2005  01:56                      3,304  Redir.asp
   30-Jun-2005  02:31  6.5.7233.32     5,177,344  Store.exe