A/V Authentication ServiceA service that is found in Office Communications Server 2007 that enables voice media to be passed through devices that use Network Address Translation…
accepted domainAny SMTP namespace for which an Exchange organization sends and receives e-mail.
access controlThe mechanisms for limiting access to certain information based on a user's identity and membership in various predefined groups.
ACE (access control entry)An entry in an object's discretionary access control list (DACL) that grants permissions to a user or group.
ACL (access control list)A security type used by Lotus Notes developers to grant varying levels of access and user privileges within Lotus Notes databases.
activationThe process of converting a storage group copy to a production storage group. Local continuous replication (LCR) and standby continuous replication (SCR)…
Active DirectoryThe directory service for Microsoft Windows 2000 Server and Windows Server 2003.
Active Directory and JournalingAlthough there is no performance impact or special considerations about the impact of journaling on Active Directory®, it is important to understand how…
Active Directory contactAn Active Directory object that contains information about an individual such as name, address, and job title. It can include a foreign e-mail address.
Active Directory Domain Services (AD DS)The Windows-based directory service. Active Directory stores information about objects on a network and makes this information available to users and…
Active Messaging ProtectionA process by which antivirus and anti-spam agents and filters are applied to e-mail messages for the purpose of stopping unsolicited or malicious e-mails…
ADC (Active Directory Connector)The service that replicates information between the Exchange Server 5.5 directory and Active Directory.
addressAddresses using a number of different protocols are commonly used on the Internet.
Address BookA directory of address lists available to Exchange users that enables them to address e-mail messages, and select conferencing resources.
address listA collection of recipient and other Active Directory objects. Each address list can contain one or more types of objects (for example, users, contacts…
Address RewriteA tool that can be used to rewrite return e-mail addresses on outgoing e-mail messages sent from a third party mail system to Exchange and destined for…
address rewritingFunctionality available on Receive connectors and Send connectors on the Exchange Server 2007 Edge Transport server that lets e-mail administrators modify…
Address Rewriting agentAn agent on the Receive connector and Send connector on a computer that has the Edge Transport server role installed, which lets e-mail administrators…
Address Rewriting Inbound agentAddress Rewriting agent for messages that enter an Exchange Server 2007 organization. See Address Rewriting agent. [Exchange 2007]
Address Rewriting Outbound agentAddress Rewriting agent for messages that leave an Exchange Server 2007 organization. See Address Rewriting agent. [Exchange 2007]
Address RewrittingFunctionality that enables an e-mail administrator to modify the SMTP addresses of senders and recipients on messages that enter and leave an Exchange…
address spaceAddress information that identifies a message and its route. [Exchange 5.5]
ADMD (administrative management domain)Part of a management domain that is a set of messaging systems managed by an organization that contains at least one message transfer agent (MTA).
Administration groupA collection of servers running Exchange 2000 that can be administered as a single unit.
Administrator programA graphical user interface that enables administrators to manage and configure Exchange objects, such as organizations, sites, and servers. [Exchange 5.5]
administrator roleIn Exchange 2007, an administrator role is a predefined security group that provides specific permissions to allow role members to manage Exchange…
ADO (ActiveX Data Objects)A programming layer built on top of OLE DB that allows high-level programming languages such as Visual Basic and VBScript to access an underlying data…
advanced securityProvides administrators and users with the ability to protect and verify messages. [Exchange 5.5]
AgentAgent means any individual, other than a broker-dealer, who represents a broker-dealer or issuer in effecting or attempting to effect purchases or sales…
Allow phraseA custom word or phrase that the administrator sets for the Content Filter agent to enable the processing of e-mail messages to Exchange Server 2007…
anonymous userA non-validated user who is not recognized by the server, and who can access only published folders and address lists. [Exchange 2003]
anti-spam stampingFunctionality in Exchange Server 2007 that helps the messaging administrator diagnose spam-related problems by applying diagnostic metadata, or "stamps,"…
antivirus stampingA mechanism that helps reduce the volume of antivirus scanning that is required across an organization by stamping messages that have been scanned for…
ArchiveSinkA diagnostic tool that can be used to log all message and recipient details of an e-mail message for incoming and outgoing messages on an Exchange server.
archivingreducing the strain of storing data by backing it up, removing it from its native environment, and storing it elsewhere. [...
attributeAn attribute is a characteristic of data that sets it apart from other data, such as location, length, or type.
Audio CodecThe digital encoding used to represent audio data. [Exchange 2007]
authenticationThe process of validating the credentials of a person, computer process, or device.
Auto AttendantA feature that supplies a caller with information and performs an action without the intervention of a human operator.
AutodiscoverA feature available in Outlook 2007 and some mobile devices that automatically configures the clients for access to Exchange Server 2007.
Autodiscover serviceA service that returns server configuration information for a mobile device or other client using only the user's SMTP e-mail address and password.
AV (antivirus software)A computer program designed to detect and respond to malicious software, such as viruses and worms.
Availability serviceThe Availability service improves information workers' free/busy data by providing secure, consistent, and up-to-date free/busy information to computers…
Back pressureA pressure that can cause water to backflow into the water supply when a user's water system is at a higher pressure than the public water system.
backboneThe bones, muscles, tendons, and other tissues that reach from the base of the skull to the tailbone.
backoffIn Exchange Server 2007, a mechanism used to deliver messages at an interim hop along the least cost routing path when direct relay fails for any reason…
BadMail folderThe BadMail folder contains messages that cannot be delivered to your organization, and also cannot be returned to the sender.
Basic authenticationAuthentication protocol supported by most Web servers and browsers. Transmits the user name and password in clear text.
Bcc journalingBcc journaling is message-only journaling with the added ability to capture the Bcc recipients.
BifurcationA split in the delivery path of an e-mail message, which is sent to multiple recipients, so that the different recipients receive different copies of the…
Block phraseA custom word or phrase that the administrator sets for the Content Filter agent to prevent e-mail messages that contain specific words or phrases from…
bounce messageA non-delivery receipt that is sent to an e-mail sender when a message cannot be delivered to the intended recipient temporarily or permanently.
boundThe upper or lower limit in a permitted range of values. [Exchange 2007]
bridgehead serverA nominated server that acts as a message transfer point between Exchange 2000 routing groups.
BrokenOne of four health states of a storage group copy. Broken indicates that the system has detected a condition that prevents replication and replay.
BrowserAn application, such as Internet Explorer or Netscape Navigator, used to view and navigate the World Wide Web and other Internet resources.
CA (certification authority)An entity responsible for establishing and vouching for the authenticity of public keys belonging to subjects (usually users or computers) or other…
Cached Exchange ModeA feature that lets a Microsoft Outlook user who has a Microsoft Exchange e-mail account work offline, either by choice or due to a connection problem.
Calendar AttendantAn Exchange Server feature that automatically places meetings marked Tentative on the recipient's calendar without requiring the intervention of any…
Calendar ConciergeA set of calendar enhancements that enable users to schedule people and resources quickly, efficiently, and reliably.
call answeringA voice mail application that answers a call so that a message can be left. [Exchange 2007]
categorizerA component of Exchange transport that processes all incoming messages and determines what to do with the messages based on information about the intended…
CCR (cluster continuous replication)A clustered Exchange deployment that combines the asynchronous log shipping and replay features in Exchange 2007 with the failover and management features…
certificateDigital signature combining data verification and encryption key. See PKI Digital Signature.
checksumA computed value that depends on the contents of a file. It is stored with data to detect file corruption.
CIDR (Classless Interdomain Routing)An IP address and routing management method that allocates IP addresses in a way that reduces the number of routes stored on any individual router, while…
Classless Interdomain RoutingAn IP address and routing management method that allocates IP addresses in a way that reduces the number of routes stored on any individual router, while…
Client Access server roleA set of components and services that enable users to access their Exchange mailboxes through the application Outlook Web Access and the protocols…
client-server architectureThe structural basis of Exchange. The client sends requests to a server, and the server carries out the instructions. [Exchange 5.5]
cloned configurationThe practice of deploying new Edge Transport servers based on the configuration information of a previously configured source server.
cluster continuous replication (CCR) environmentA clustered Exchange deployment that uses built-in asynchronous log shipping technology to create and maintain a copy of each storage group on a second…
cluster-awareThe classification of an application or service that runs on a server cluster node, is managed as a cluster resource, and is designed to be aware of and…
cluster-aware applicationAn application that can run on a cluster node and that can be managed as a cluster resource.
clustered mailbox serverIn Exchange Server 2007, a mailbox server that is installed in a Windows failover cluster.
cmdletA single-feature command-line tool that is used to manipulate objects in Windows PowerShell. [Exchange 2007]
CMS (Conferencing Management Service)The network service that coordinates the booking of virtual resources for online meetings in the Exchange Conference Service.
code pageOrdered set of characters in which a numeric index (code point) is associated with each character of a particular writing system.
compliance solution frameworkThe IT infrastructure that your organization has implemented to comply with the specific regulations that apply to your industry.
ConfigCA (Configuration Connection Agreement)A special Connection Agreement implemented as part of the Active Directory Connector that replicates configuration naming context data from downlevel…
Connection AgreementThe configuration of information to replicate using the Active Directory Connector.
connectorA hold'em starting hand in which the two cards are one apart in rank. Examples: KQs, 76.
console treeIn Exchange 2007, this is left pane of the Exchange Management Console. [Exchange 2007]
contactAn Active Directory object that represents a user who is outside of the Exchange organization.
ContainerIn the Exchange Administrator program, an object that contains other objects. For example, the Recipients container is composed of recipient objects.
content conversionThe process of transforming e-mail messages from one format to another for the purpose of mail flow or storage, such as MAPI to MIME, or uuencode to…