mail-enabledAn Active Directory object that has at least one e-mail address defined. If the user is mail-enabled, the user has an associated e-mail address, but does…
mailbox storeA database for storing mailboxes in Exchange. Mailbox stores store data that is private to an individual and contain mailbox folders generated when a new…
mailbox-enabledAn Active Directory object that has an Exchange mailbox associated with it; therefore it can both send and receive messages within the Exchange system.
MAPI profilesThe set of MAPI configuration settings, stored in the registry, that enable MAPI clients, such as Microsoft Outlook(r), to connect to various messaging…
MDB (message database)An instance of a database implemented in Exchange server. A single MDB is normally identified as being public or private depending on the type of data…
message-only journalingMessage-only journaling creates a copy of all messages and the corresponding P2 message header data to and from users on a mailbox database and sends the…
MetabaseA store that contains metadata such as that used by Internet Information Server IIS to obtain its configuration data.
Metabase update serviceA component in Exchange 2000 that reads data from Active Directory and transposes it into the local IIS metabase.
migrationMoving files to another computer application or platform; may require conversion to a different format.
mixed modeThe default operating mode of Exchange when it is installed. Mixed mode allows Exchange 2003 and Exchange 2000 servers and servers running earlier…
mixed-mode siteAn Exchange 5.x site that also contains Exchange 2003 or Exchange 2000 servers. [Exchange 2003]
MTA (message transfer agent)The component in all versions of Exchange Server that transfers messages between servers using the X.400 protocol. [Exchange 2000]
MTA CheckA command line tool that can be used to check the message transfer agent (MTA) database consistency of Exchange MTA, and to repair the MTA database if…