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]
namespaceA prefix applied to URIs, URNs, and XML entities to prevent naming conflicts.
native modeAn operating mode of Exchange Server 2003 when the Exchange organization consists of only Exchange 2003 or Exchange 2000 servers.
NDR (non-delivery report)A notice that a message was not delivered to the recipient. [Exchange 2003]
newsfeedThe periodic transfer of newly posted newsgroup articles from one NNTP server to another using the NNTP protocol.
newsgroupAn online discussion group that users with news readers can participate in. An IBM® Lotus® Domino™ NNTP server can store USENET newsgroups, public…
NNTP (Network News Transfer Protocol)Protocol that supports reading newsgroups, posting new articles, and transferring articles between news servers.
NSPI (Name Service Provider Interface)Part of the DSProxy process that can accept Outlook client directory requests and pass them to an address book provider. [Exchange 2000]
OAB (offline address book)A copy of an address book that has been downloaded so that an Outlook user can access the information it contains while disconnected from the server.
OAB (offline address book) generationThe process by which Exchange Server creates and updates the OAB. Administrators can define when the OAB generation process will run. [Exchange 2007]
OAB (offline address book) version 4The OAB version that was introduced with Exchange Server 2003 Service Pack 2 (SP2). OAB version 4.0 is required for Web-based distribution. [Exchange 2007]
OABGenWhen the Microsoft Exchange System Attendant generates the offline address book (OAB), it calls Oabgen.dll (referred to as OABGen).
objectAn entity such as a file, folder, shared folder, printer, or Active Directory object, described by a distinct, named set of attributes.
offline address booksContain the recipient objects found in any Recipients container in the directory. [Exchange 5.5]
offline address listA collection of address lists available to Exchange Server 2003 users either when they are working offline, or when they are working remotely over a…
OLE DBSee definition for: Object Linking and Embedding Data Base
open proxyA proxy server that accepts connection requests from anyone anywhere and forwards the traffic as if it has originated from the local hosts. [Exchange 2007]
organizationA collection of Exchange computers grouped into sites. [Exchange 5.5]
Organizational Forms LibraryA system folder on an Exchange computer that stores forms commonly accessed by users within an organization.
outbound hostThe host computer that receives a newsfeed. [Exchange 5.5]
outdialingA process in which Unified Messaging (UM) dials or transfers calls. Unified Messaging generally receives calls, but sometimes dials calls.
Outlook AnywhereA feature that makes it possible for a user to access their Exchange Server mailbox from any workstation using the full Outlook client, regardless of the…
Outlook E-Mail PostmarkA computational proof that Outlook applies to outgoing messages to help recipient messaging systems distinguish legitimate e-mail from junk e-mail.
Outlook Voice AccessA feature that allows a Unified Messaging-enabled user to access their Microsoft Exchange Server mailbox over the telephone.
Outlook Web AccessThe Web browser interface to Exchange Server mailbox and public folder data. The Outlook Web Access client in Exchange Server 5.
Outlook Web Access LightA lightweight version of Outlook Web Access optimized for accessibility and compatibility with the widest array of browsers and operating systems.
Outlook Web Access Web PartA piece of the user interface (UI) in Outlook Web Access that can be hosted in iframes as part of other Web applications such as SharePoint Portal Server…
Outside Line Access CodeThe prefix that is used to access an outside line. This prefix is typically 9. [Exchange 2007]
P1 message headerThe P1 message header is the [transport envelope] address information that is used by message transfer agents (MTAs) to route mail.
P2 message headerThe P2 message header contains only the message recipient data that the sender declared to the recipients.
PAB (Personal Address Book)A customizable address list in which a user can add and delete names of users and personal distribution lists to which messages frequently are addressed.
PBX (Private Branch eXchange)A private telephone network in an organization. Individual telephone numbers or extension numbers are supported, and calls are automatically routed to…
PDL (personal distribution list)A distribution list that a user creates and adds to their Personal Address Book (PDL) A distribution list is a name assigned to a group of recipients.
perimeter networkAn Internet Protocol (IP) network segment that contains resources, such as Web servers and virtual private network (VPN) servers, that are available to…
permissionAuthorization for a user to perform an action, such as sending e-mail for another user or posting items in a public folder.
PFCA (Public folder connection agreement)A connection agreement in the Active Directory Connector (ADC) that is responsible for replicating Public Folder proxy objects between the Exchange 5.
PhishingWhen internet fraudsters impersonate a business in an attempt to trick you into giving out your personal information, such as usernames, passwords, and…
phishing confidence levelA property of each e-mail message that the Office Outlook 2003 Junk E-mail Filter stamps as a property on the message when it is processed in the Outlook…
Pickup directoryA directory that receives RFC-822 compliant files from the file system for the purpose of creating message objects that can be passed to the Submission…
pilot identifierThe string that is received with a new call that is used to associate the call with a dial plan. [Exchange 2007]
pilot numberA telephone number that points to a hunt group and is the access number for calls that are routed to Unified Messaging servers.
PINNoncancerous growth of cells lining the internal and external surfaces of the prostate gland.
pipeA circular conduit constructed of any one of a number of materials that conveys water by gravity or under pressure.
pipe, toSame as "to pipeline": In the Microsoft Exchange Management Shell, the act of one cmdlet using the output of another cmdlet when it performs an operation.
pipeliningIn the Exchange Management Shell, one or more chained commands that are separated by the pipeline operator.
PKI (public key infrastructure)The laws, policies, standards, and software that regulate or manipulate certificates and public and private keys.
Play on PhoneA Unified Messaging feature that users can use to play their voice messages or play and record personalized voice mail greetings, over a telephone.
poison message queueA persistent queue that isolates messages that are detected as potentially fatal to an Exchange Server 2007 server. This queue is typically empty.
poison queueQueue to isolate messages that are detected as potentially harmful to the Exchange 2007 system after a server failure.
PolicyThe contract form issued by the company to explain the coverage provided. It is a legal document.
POP3 (Post Office Protocol version 3)A mail protocol that allows clients running it to retrieve mail from a host mail server also running the protocol. You can enable POP3 on a Domino server.
predicateIn Exchange Server 2007, a function that is used as a condition or exception on a transport rule to determine whether an action should be applied to an…