Stubbing is a feature that replaces email messages, message attachments, calendar items, tasks, and notes that are stored in the live email system with a ‘‘stub’’ that points to the copy of the item that is stored in Netmail Archive. This feature allows administrators to reduce mailbox sizes by replacing storage-intensive content with much smaller stubs. Items that have been stubbed remain accessible to end users directly from the email client and can be retrieved from the archive at any time for viewing or forwarding purposes. Stubbing reduces the size of message databases without impacting end-user operations.
The Stubbing Agent (SA) is the application that reconciles stubs in a GroupWise environment. When an end user clicks on a stubbed item in the live GroupWise system, the Post Office Agent (POA) requests that the SA communicate with the Remote Provider Server to retrieve and deliver the item from the archive location.
Important: In a GroupWise environment, SOAP API should be selected in order for stubbing to function properly. For detailed instructions on selecting the type of API, refer to the Netmail Archive Installation Guide. Also, note that in a GroupWise environment, Novell has only implemented stubbing support in the GroupWise 8 (and above) Windows Client. Stubs will appear as empty messages in any other GroupWise client (e.g., the WebAccess client).
How Stubbing Functions in a GroupWise Environment
2. During the Stubbing Job, the Index Server assigns a URL to the stubbed item and indexes it.
3. The stubbed item is stored in the archive store.
4. When an end user clicks on the stubbed item in the live email system, the POA sends a request to the SA to retrieve the entire content of the stubbed item.
5. The SA establishes communication with the Remote Provider Server.
6. The Remote Provider Server queries the Index Server to receive the URL of the stubbed item.
7. After hearing back from the Index Server, the Remote Provider Server uses the URL to retrieve the stubbed item from the archive store.
8. The Remote Provider Agent sends the stubbed item to the SA.
9. The SA sends the stubbed item to the POA to populate it into the end user’s client interface. The end user is now able to view the entire content of the stubbed item.
10. The SA sends the stubbed item to the POA to populate it into the end user’s mailbox. The end user is now able to view the entire content of the stubbed item.
Stubbing Error Messages
An error in retrieving a stubbed item can occur if a component of the resolution process cannot establish communication with the other components.
Stubbing Error in a GroupWise Environment: If Netmail Archive cannot resolve a stubbed item in a GroupWise environment, none of the stubbed item’s content will appear when the end user clicks on the item. Instead, an error message will appear where the content should be. Only the item’s metadata (subject, date, etc.) will appear, because this is the only portion of the stubbed item that Netmail Archive keeps in the live GroupWise system.
Stubbing and GroupWise WebAccess
GroupWise 8 currently does not support viewing stubs in WebAccess. Though stubbed email messages will appear in the WebAccess message list, the body of the stubbed email message will not appear when the end user selects it. Instead, the body of the email message will be blank.
If you are deploying Netmail Archive in a GroupWise environment in which end users will use WebAccess, Netmail suggests that you deploy the WebViewer component and instruct end users to select the Archive option from the WebAccess toolbar to view archived content from the Netmail Archive WebViewer. In the Archive view, all archived content, including stubbed items, will be visible to the end user.