A custom MAPI transport program may not function as expected with Outlook 2002

This article was previously published under Q321419
This article has been archived. It is offered "as is" and will no longer be updated.
If you use a custom MAPI transport program with Microsoft Outlook 2002 (for example, if you use a program that permits you to select the security-level [classification] of an outgoing e-mail message), your custom MAPI transport program may not function as expected.
This problem may occurif your custom MAPI program uses preprocessor functions in a custom MAPI transport provider. This problem may occur even if the IMAPISupport::RegisterPreprocessor method returns the value S_OK becuase Outlook 2002 still may not call the preprocessor function of the custom MAPI transport provider.
To resolve this problem, install Microsoft Office XP Service Pack 3 (SP3).

For additional information about how to obtain and install Office XP Service Pack 3, click the following article number to view the article in the Microsoft Knowledge Base:
832671 Description of Microsoft Office XP Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.
xcln outlook2002 transport provider preprocessor imapisupport

Article ID: 321419 - Last Review: 10/24/2013 11:30:11 - Revision: 1.1

Microsoft Outlook 2002 Standard Edition

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