Bcc journaling

Bcc journaling is message-only journaling with the added ability to capture the Bcc recipients. When Bcc journaling is enabled, Exchange captures all recipients (including Bcc recipients) that are known at the originating server. If this recipient list includes hidden distribution lists, query-based distribution lists, or distribution lists that are expanded on another server, the recipients for these lists will not be included in the journalized mail. This functionality is enabled by setting a registry key. For more information about setting this registry key, see Microsoft® Knowledge Base article 810999, "XADM: Bcc Information Is Lost for Journaled Messages in Exchange 2000."