MRMMessaging records management (MRM) is the records management technology in Microsoft Exchange Server 2007 Enterprise Edition that helps organizations to reduce the legal risks that are associated with e-mail messages and other communications. MRM gives users the ability to keep messages that are needed to comply with company policy, government regulations, or legal needs, and to remove content that has no legal or business value. This is accomplished through the use of managed folders, which are mailbox folders to which managed folder mailbox policies have been applied. The administrator or the user places these managed folders in the user's mailbox, and then users sort messages into the managed folders according to their needs and their organization's message retention policy. Messages placed in the managed folders are then periodically processed by Exchange according to the managed folder mailbox policies. When a message reaches a retention limit, it is archived, deleted, or flagged for user attention, or the event is simply logged. Earlier versions
Prior to Exchange 2007, similar functionality was availble from Exchange 5.5 onwards, where it was know as Mailbox Manager. MRM resources: | 
