Exchange Public Folder task queues

Table: Exchange Public Folder task queues describes the queues that each Exchange Public Folder task uses. Here, exchange server is the name of the server being managed by the Public Folder task, whereas number is a number that uniquely identifies the queue.

Table: Exchange Public Folder task queues

Queue name	Messages placed on the queue
Enterprise Vault Public Folder task for server queue P1	Update Shortcut, Operation Failed.
Enterprise Vault Public Folder task for server queue P3	Process Folder, Process Folders (Run Now), Check Folders, Check Folder.
Enterprise Vault Public Folder task for server queue P5	Process Folder, Process Folders (Schedule only).

Note that Enterprise Vault has not used queues P2 and P4 since version 3.6.

Table: Messages in the Exchange Public Folder task queues provides more information on the messages that the Exchange Public Folder task may place in queues P1, P3, and P5.

Table: Messages in the Exchange Public Folder task queues

Message	Notes
Operation Failed	Informs the Exchange Public Folder task that an error has occurred and that it should change the message from archive pending back into a message. The message will be reprocessed later. This message is sent if an error occurs during archiving and storage.
Process Folder	Asks the Exchange Public Folder task to examine a specific folder and find any messages that match the archiving criteria. These messages are then turned into archive pending, and a message is placed on the process item queue for each message to be archived.
Process Folders	Asks the Exchange Public Folder task to determine which folders on the Exchange Server are eligible for archiving. The Exchange Public Folder task reads the list of all public folders hosted on the Exchange server and sends a Process Folder message (on the same queue) for each top-level folder that is eligible. Process Folders messages are placed immediately on queue P3 if the administrator selects Run Now from the task properties, or it will be placed on queue P5 at the start of a scheduled archive period (provided that there are no other process folders messages already waiting to be done).
Update Shortcut	Instructs the Exchange Public Folder task to turn an archive pending item into a shortcut. It occurs after a message has been stored by the Storage service, and backed up.