Configuring registry settings for Exchange Server public folder filtering

Configuring the registry settings described in this section will enable custom filtering for all the Exchange Public Folder tasks hosted on the server. You can create a public folder ruleset file to apply specific rules to public folder archiving.

Unlike mailbox filtering, you cannot use named ruleset files to configure filtering for particular public folders.

To configure the registry settings to enable custom filtering for Exchange Public Folder tasks

  1. On the computer that hosts the Enterprise Vault Exchange Public Folder task, log on as the Vault Service account.

  2. Start Regedit.

  3. Navigate to the following location:

    HKEY_LOCAL_MACHINE
    \Software
     \KVS
      \Enterprise Vault
       \External Filtering
    

    If the External Filtering key does not exist, create it as follows:

    • Right-click Enterprise Vault and select New > Key.

    • Name the key External Filtering.

  4. Create a PublicFolder key as follows:

    • Right-click External Filtering and select New > Key.

    • Name the key PublicFolder.

  5. Create a new string value called 1 for the new custom filtering entry.

  6. Right-click the new entry and select Modify. Give it the value:

    EnterpriseVault.CustomFilter
    
  7. Create a new DWORD called Override and set its value to 0 (zero). The Exchange Public Folder task processes the archiving rules for all messages as normal for user mailbox and public folder archiving.

    You can prevent the Exchange Public Folder task from processing archiving rules by setting the Override entry to 1.

  8. Close Regedit.

  9. After you have configured the required XML filter rules, restart the Exchange Public Folder tasks.

    See About custom filtering ruleset files.