mail contactA mail-enabled Active Directory contact that contains information about people or organizations that exist outside an Exchange Server organization.
mail userA mail-enabled Active Directory user that represents a user outside the Exchange organization. Each mail user has an external e-mail address.
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…
MailboxAn area on a storage device where email is placed. In email systems, each user has a private mailbox.
mailbox databaseA database for storing mailboxes in Exchange Server. The mailbox database manages the data in mailboxes, tracks deleted messages and mailbox sizes, and…
mailbox delivery queueA group of temporary queues that hold messages that are being delivered to a Mailbox server by using encrypted Exchange RPC.
Mailbox server roleAn Exchange Server 2007 server role that provides e-mail storage and advanced scheduling services for Microsoft Office Outlook users.
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 userA mail-enabled Active Directory user object that has mailbox attributes. [Exchange 2007]
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.
managed content settingsSettings that are applied to the managed folders in users' mailboxes to control the retention and journaling of messages for messaging records management…
managed custom folderA type of managed folder that is created by an Exchange administrator and placed in a user's mailbox for messaging records management (MRM) purposes.
managed default folderA mailbox folder (such as the Inbox folder) that appears in Office Outlook by default and to which messaging records management (MRM) has been applied.
managed folderA folder in a user's mailbox to which messaging records management (MRM) has been applied.
managed folder assistantA Microsoft Exchange Mailbox Assistant that creates managed folders in users' mailboxes and applies managed content settings to them for messaging records…
managed folder mailbox policyA logical grouping of managed folders. When a managed folder mailbox policy is applied to a user's mailbox, all the managed folders that are linked to the…
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…
matched name selection methodThe mechanism used to help a caller differentiate between users with names that match the touch-tone or speech input. [Exchange 2007]
MBR (Mail-based replication)A mechanism to replicate directory information through a messaging transport. This term applies to Exchange 5.
MCU (Multipoint Control Unit)A reference to the T.120 protocol that allows clients to connect to data conferencing sessions.
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 dehydrationIn Exchange Server 2007, the removal of unnecessary elements, such as MIME content, from queued messages that are cached in memory.
message envelopeThe information contained in an e-mail message that is required to send and deliver a message between messaging servers by using SMTP protocol commands.
Message HeaderMessage headers generally contain the identities of the author and recipients, the subject of the message, and the date the message was sent.
message trackingThe tracking of events from the time a message enters an Edge Transport server or Hub Transport server to the time it leaves the any of the Edge Transport…
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…
messaging profileA group of settings that provide Exchange with information about a client's configuration. [Exchange 5.5]
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.
metadataMetadata is information about a particular data set which may describe, for example, how, when, and by whom it was received, created, accessed, and/or…
Microsoft Exchange Hosted ServicesA set of four distinct hosted services: Hosted Filtering, which helps organizations protect themselves from e-mail-borne malware; Hosted Archive, which…
Microsoft Exchange Mailbox AssistantsThe process that runs on a Mailbox server and performs background processing of mailboxes in the Exchange store. [Exchange 2007]
Microsoft Exchange Troubleshooting AssistantA Microsoft Exchange tool that is used to automatically determine what set of data is required to troubleshoot symptoms that are identified.
Microsoft Mail ConnectorAn Exchange component that provides connectivity to Microsoft Mail for PC Networks gateways and Microsoft Mail for AppleTalk Networks (also known as…
Microsoft Outlook Web AccessInteract with the ActiveX Server function built into Microsoft Internet Information Server.
migrationMoving files to another computer application or platform; may require conversion to a different format.
MIME (Multipurpose Internet Mail Extensions)An Internet standard that allows different forms of data including video, audio, or binary data to be attached to e-mail without requiring translation…
missed call notificationAn e-mail message that is sent to a Unified Messaging subscriber that indicates that someone called but did not leave a message. [Exchange 2007]
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]
MNS (Majority Node Set)A type of cluster quorum model in Windows Server 2003. Exchange Server 2007 uses a new type of MNS quorum with file share witness to support failover…
MonadThe code name for the Windows command-line shell technology and scripting language that provides a task automation solution for the Windows platform.
moveThe task of moving an object from one location to another, such as moving a mailbox from one server to another.
MRM (messaging records management)Records management technology in Exchange 2007 that helps organizations to reduce the legal risks that are associated with e-mail and other communications.
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…
multifactor authenticationAn authentication method that requires two or more authentication methods, which may include something the user provides, such as certificates; something…
multiple password policyEnables administrators to configure the Key Management (KM) server to require multiple passwords to perform certain tasks. [Exchange 5.5]