SpoofingSome market analysts maintain that the increased volatility in stock markets may be the result of an illegal practice known as spoofing, or phantom bids.
SRS (Site Replication Service)A directory service (similar to the directory used in Exchange Server 5.5) implemented in Exchange 2000 to allow the integration with downstream Exchange…
SSL (Secure Sockets Layer)A security protocol for the Internet and Intranets that provides communications privacy and authentication for IBM® Lotus® Domino™ server tasks that…
standby clusterA clustered solution containing one or more passive nodes that does not contain any clustered mailbox servers, but can be quickly provisioned with one in…
Storage groupA collection of Exchange databases on a server running Exchange 2000 that share the same Extensible Storage Engine (ESE) instance and transaction log.
storage quotaA storage size limit for messages in a user mailbox or a public folder, based on the total size of the messages.
StoreThe generic name given to the storage subsystem on a server running Exchange. This term is used interchangeably to describe the Store.
store driverA software component of the Hub Transport Server that delivers inbound messages to Exchange stores, the databases that contain public folder and mailbox…
store overrideIn Exchange Server 2007, a mechanism used by the store driver to indicate an alternative delivery destination for messages being routed to public folders…
Submission queueA persistent queue that is used by the categorizer in Exchange Server 2007 to gather all messages that have to be resolved, routed, and processed by…
subscriber access numberA number that is configured in a Private Branch eXchange (PBX) that allows a subscriber to access their Microsoft Exchange mailbox over the telephone.
system attendantOne of the core Exchange 2000 services that performs miscellaneous functions (usually related to directory information) such as generation of address…
system policiesPolicies that apply to server-side objects, such as mailbox stores, public folder stores, and servers. [Exchange 2003]
system promptA short audio recording, installed on the Exchange Unified Messaging server, that is played to callers by the server.
T.120A standards-based protocol used with Exchange Data Conferencing. Clients such as Microsoft NetMeeting are T.120 compatible. [Exchange 2000]
TargetIn diagnostic tests, the molecule or nucleic acid sequence assayed in a sample.
target serverAn Exchange computer that acts as the end point of a connection between two sites. [Exchange 5.5]
tarpittingThe practice of artificially delaying server responses for specific SMTP communication patterns that indicate high volumes of spam or other unwelcome…
tarpitting intervalThe interval that is used to delay a response in a tarpitting scenario. [Exchange 2007]
TCP (Transmission Control Protocol)A protocol within TCP/IP that governs the breakup of data messages into packets to be sent by IP (Internet Protocol) and the reassembly and verification…
temporary keyA random character string given to users to enable advanced security. [Exchange 5.5]
text-to-speechPertaining to technologies for converting textual (ASCII) information into synthetic speech output.
three-factor authenticationAn authentication method that requires three authentication methods, which may include something the user provides, such as certificates; something the…
TLS (Transport Layer Security)A protocol that provides communications privacy and security between two applications communicating over a network.
transaction log fileA file that contains a record of the changes that were made to an Exchange database.
transitionThese are where one type of bottom material or structure changes to another, for instance, a rock pile to solid rock, or sand to gravel.
transport dumpsterIn Exchange Server 2007, a feature of the Hub Transport server role that is only enabled for cluster continuous replication (CCR).
transport ruleA concept that implements a single function point of a transport messaging policy.
Transport Rules agentAn Exchange Server 2007 agent that enables organizations to apply compliance and policy based transport rules to e-mail messages that are sent to or…
Trojan horseA computer program with an apparently or actually useful function that contains additional (hidden) functions that surreptitiously exploit the legitimate…
trust relationshipA logical relationship established between domains to allow pass-through authentication, in which a trusting domain honors the logon authentications of a…
TTS (Text-to-Speech)Technologies for translating or converting typewritten text into speech. [Exchange 2007]
TUI (Telephone User Interface)An interface that is used to navigate the menus of a Unified Messaging (UM) system using DTMF or touch-tone inputs. [Exchange 2007]
two-factor authenticationAn authentication method that requires two authentication methods, which may include something the user provides, such as certificates; something the user…
UDP (User Datagram Protocol)A connectionless protocol within TCP/IP that corresponds to the transport layer in the International Standard Organization's Open System Interconnect…
UM access telephone numberA telephone number that points to a hunt group and is the access number for calls that are routed to Unified Messaging servers.
Unified MessagingAn application that consolidates a user's voice mail, fax, and e-mail into one mailbox, so that the user only needs to check a single location for…
Unified Messaging server roleA set of components and services that enable voice, fax, and e-mail messages to be stored in a user's single mailbox.
Unreachable queueA persistent queue that contains messages that cannot be routed to their destinations.
Upgradenew or better version of some hardware or software.
URL (Uniform Resource Locator)The Internet address for a document, file, or other resource. It describes the protocol required to access the resource, the host where it can be found…
UsenetThe collection of host computers and networks that exchange news articles organized by subject. [Exchange 5.5]
USENET siteOne or more host computers that run the Network News Transfer Protocol (NNTP). A USENET site is different than an Exchange site. [Exchange 5.5]
User AccountContains information such as the user name, password, group membership, and permissions. [Exchange 5.5]
user profileA group of settings that provides the operating system with information about a client's configuration. [Exchange 5.5]
Virtual rootA shortcut pointer to a physical storage location. Virtual roots are normally defined to allow users and applications to connect with a short "friendly"…
Virtual ServerA virtual computer that resides on an HTTP server but appears to the user as a separate HTTP server.
Virus(VY-rus) In medicine, a very simple microorganism that infects cells and may cause disease.
Virus Scanning APIA virus-scanning API that is used by third-party antivirus service providers to protect computers that have the Exchange Server 2007 Mailbox server role…
voice mailA system that records and stores telephone messages in a user mailbox. [Exchange 2007]
voice messageAn electronic message with a primary content of digitized audio. [Exchange 2007]
voice message originatorAn e-mail address that is used on call answering messages. The voice message originator is used as the "From" field for Unified Messaging messages and is…
VoIP (Voice over IP)The practice of using an IP data network to transmit voice calls. [Exchange 2007]
VoIP gatewayA computer device that converts between circuit switch telephony protocols and VoIP protocols. [Exchange 2007]
VPN (Virtual Private Network)A secure network that is constructed by using public wires to connect nodes. For example, there are a number of systems that enable creation of networks…
VSAPI (Virus Scanning API)A virus-scanning API that is used by third-party antivirus service providers to protect computers that have the Exchange Server 2007 Mailbox server role…
VUI (Voice User Interface)An interface that is used to navigate the menus of a Unified Messaging (UM) system using speech inputs. [Exchange 2007]
WAP (Wireless Application Protocol)An open, global specification that enables wireless devices to access and interact with information and services. [Exchange 2003]
Web referenceA reference that provides access to an available resource by using an Internet protocol such as SOAP or HTTP.
Web Storage SystemA storage platform that provides a single repository for managing multiple types of unstructured information in one infrastructure.
Web-based distributionThe distribution method by which Outlook 2007 or later clients that are working offline or through a dial-up connection access the offline address book…
WebReady Document ViewingA technology that allows documents to be converted to HTML and displayed in a Web browser when a viewing application is not available. [Exchange 2007]
Windows FirewallFirewall software that is a component of Windows XP SP2 and later. The previous version of this software was called Internet Connection Firewall (ICF).
World Wide WebThe WWW is made up of all of the computers on the Internet which use HTML-capable software (Netscape, Explorer, etc.) to exchange data.
X-headerUser-defined, unofficial header field that exists in the message header. X-headers are not specifically mentioned in RFC 2822, but the use of an undefined…
X.400 ConnectorAn Exchange component that is integrated with the message transfer agent (MTA) and can be configured to connect routing groups within Exchange, or to…
X.400 RecommendationsDefines the standard interfaces of an electronic messaging system. These recommendations specify the structure of a message handling system, message…
X.400 transport stackNetworking software required to support X.400 server-to-server message transport. [Exchange 5.5]