PRB: IExchangeManageStore::GetMailboxTable Doesn't Return PR_ENTRYID

ID: Q216420

The information in this article applies to:

Exchange Development Kit (EDK), versions 5.0, 5.5

SYMPTOMS

You cannot uniquely identify a mailbox across space and time when calling IExchangeManageStore::GetMailboxTable.

CAUSE

IExchangeManageStore::GetMailboxTable returns the following properties:

PR_DISPLAY_NAME

PR_EMAIL_ADDRESS

PR_LOCALE_ID

PR_MESSAGE_SIZE

PR_MESSAGE_SIZE_EXTENDED

PR_CONTENT_COUNT

PR_ASSOC_CONTENT_COUNT

PR_NT_USER_NAME

PR_LAST_LOGON_TIME

PR_LAST_LOGOFF_TIME

PR_STORAGE_LIMIT_INFORMATION

PR_INSTANCE_KEY

Of the above properties, the one that most closely resembles a Globally Unique Identifier is PR_INSTANCE_KEY. While this property is a MAPIUID property, it is not guaranteed to be the same value every time IExchangeManageStore::GetMailboxTable is called.

RESOLUTION

In most cases the only property that is guaranteed to be unique and stable across space and time is PR_ENTRYID. Unfortunately, this property is not returned with IExchangeManageStore::GetMailboxTable. As an alternative to PR_ENTRYID, it is possible to use PR_EMAIL_ADDRESS. Like PR_ENTRYID, this property is guaranteed to be globally unique and stable across space and time.

Additional query words: kbGrpMsg kbMsg kbEDK500 kbEDK550


Keywords          : kbMsg kbEDK500 kbEDK550 kbGrpMsg 
Version           : WINDOWS:5.0,5.5
Platform          : WINDOWS 
Issue type        : kbprb

Last Reviewed: May 26, 1999