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…
control messageA command used by USENET host computers to create and remove newsgroups or cancel messages that have already been posted. [Exchange 5.5]
Copy SuspendOne of four health states of a storage group copy. Copy Suspend indicates that an administrator has temporarily halted log copying. [Exchange 2007]
cross certificationEnables organizations to establish trust with other organizations so that users can verify the digital signature of messages sent by users in other…
CTL (certificate trust list)A signed list of root certification authority certificates that an administrator considers reputable for designated purposes, such as client…
CTP (Conference Technology Provider)A provider of data conferencing services such as real-time video, audio, and telephony integration. [Exchange 2000]
custom address listAn address list created to help users who need a custom view of recipients within an Exchange organization.
custom phraseA word or phrase that the administrator sets for the Content Filter agent to evaluate the content of an e-mail message and apply appropriate filter…
custom recipientIn Exchange 5.5 and earlier, a custom recipient is a user who is not hosted by Exchange.