You cannot use Outlook Express to download an e-mail message, and you receive an event message in the Application log

You cannot use Outlook Express to download an e-mail message, and you receive an event message in the Application log that is similar to the following:

The e-mail message contains an embedded Secure/Multipurpose Internet Mail Extension (S/MIME) digital signature. The digital signature is obtained from Microsoft Exchange Server 2003 Service Pack 1. The event that is logged in the Application log occurs when you use Post Office Protocol version 3 (POP3) or Internet Message Access Protocol (IMAP) version 4rev1 (IMAP4) to download the message in Outlook Express.

Note This issue only occurs when a third-party virus scan software is enabled in Exchange Server 2003 Service Pack 1.

Service pack information

To resolve this problem, obtain the latest service pack for Exchange Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Hotfix information

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: 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.

Prerequisites

Exchange Server 2003 Service Pack 1 For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

This problem was first corrected in Exchange Server 2003 Service Pack 2.

You can access the e-mail message in Microsoft Outlook. with Messaging Application Programming Interface (MAPI) or Microsoft Outlook Web Access (OWA). For more information about this hotfix, click the following article number to view the article in the Microsoft Knowledge Base: For more information, click the following article number to view the article in the Microsoft Knowledge Base: