Article ID: 912239 - View products that this article applies to.
This article describes how to use the dispidHeaderItem MAPI property to identify the current state of a message that you receive in Microsoft Office Outlook 2003.
When Outlook 2003 is configured to connect to an IMAP or POP3 mail server, messages are downloaded to a personal folders (.pst) file. When Outlook 2003 is configured to connect to a Microsoft Exchange Server 2003 server, you can also configure Outlook 2003 to download messages to a .pst file. Additionally, you can configure Outlook 2003 to work in Cached Exchange Mode. In Cached Exchange Mode, messages are downloaded to an offline folder (.ost) file.
When Outlook 2003 is configured to work in Cached Exchange Mode or configured to connect to an IMAP mail server, the messages that are downloaded to the .ost or .pst files on the client computer can be in one of the following states:
Note The dispidHeaderItem MAPI property does not apply to remote transport headers. Remote transport headers can be distinguished by the IPM.Remote message class.
The dispidHeaderitem MAPI property and PSETID_Common namespace are defined in the following code:
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The following is an example of how the dispidHeaderItem MAPI property can be used to identify the current state of a message:
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