Concepts and Planning << >>



Address Book   Displays recipient names (mailboxes, distribution lists, custom recipients, and public folders) in the directory. The Address Book can contain one or more address lists. See also global address list.

address list   A collection of recipients (mailboxes, distribution lists, custom recipients, and public folders) in the Address Book, organized by their Recipients containers. See also global address list.

address space   Address information that identifies a message and its route.

Administrator program   A graphical user interface that enables administrators to manage and configure Microsoft Exchange Server objects, such as organizations, sites, and servers.

advanced security   Provides administrators and users with the ability to protect and verify messages.

alias   Typically a shortened version of the mailbox owner's name, used to address messages.

anonymous public folder   A public folder that anonymous users can access.

anonymous user   A nonvalidated user who is not recognized by Microsoft Exchange Server, and who can only access published folders and address lists.

authentication   Validation of a user's Windows NT Server logon information. See also trust relationship.


backbone   The network connection between local area network (LAN) segments.

bridgehead server   A Microsoft Exchange Server computer that acts as the endpoint of a connection between two sites and is responsible for routing messages through that connection.

browser   Software that interprets Hypertext Markup Language (HTML) files posted on the World Wide Web, formats them into Web pages, and displays them to the user.


certificate   Information used for digital signatures and encryption that binds the user's public key to the mailbox.

client/server architecture   The structural basis of Microsoft Exchange Server. The client sends requests to a server, and the server carries out the instructions.

connector   A Microsoft Exchange Server component that routes messages between Microsoft Exchange Server sites and other messaging systems. For example, the Internet Mail Service enables Microsoft Outlook users to exchange messages with other users on the Internet.

container   In the Microsoft Exchange Server Administrator program, an object that contains other objects. For example, the Recipients container is composed of recipient objects.

control message   A command used by USENET host computers to create and remove newsgroups or cancel messages that have already been posted.

cross certification   Enables organizations to establish trust with other organizations so that users can verify the digital signature of messages sent by users in other cross-certified organizations.

custom recipient   A recipient in a foreign system whose address is in the Address Book.


delegate   A person with permission to manage mail for another user, send mail for another user, or do both.

delivery receipt (DR)   A notice confirming that a message was delivered to its intended recipient.

digital signature   An advanced security feature that enables users to verify the source of messages and to verify that the contents have not been modified during transit.

directory    Stores all information about an organization's resources and users, such as sites, recipients, and servers. Other components use the directory to address and route messages.

directory export   The process of exporting user account information from the directory.

directory import   The process of importing user account information into the directory.

directory hierarchy   In the Administrator program, the hierarchical structure of objects in the directory.

directory object   A record such as a server, mailbox, or distribution list in the directory. Every object has properties that can be defined.

directory replication   The process of updating the directories of all servers within and between sites.

directory replication bridgehead server   A Microsoft Exchange Server computer that acts as the endpoint of a directory replication connection between its site and a remote site, and requests directory updates from the remote site.

directory synchronization   The process of synchronizing a Microsoft Exchange Server directory with directories from Microsoft Mail for PC networks and Microsoft Mail for AppleTalk Networks (also known as Quarterdeck Mail).

direct postoffice   A postoffice connected through a local area network (LAN), an asychronous connection, or an X.25 connection.

distribution list   A group of recipients addressed as a single recipient. Administrators can create distribution lists that are available in the Address Book. Users can create distribution lists and add them to their personal address books.

domain   A group of servers running Windows NT Server. A domain can also include other types of servers and clients.

domain controller   The Windows NT Server computer that maintains the security database for a domain and authenticates domain logons. Windows NT domains can have one primary domain controller (PDC) and one or more backup domain controllers (BDCs).

domain name system (DNS)   A collection of distributed databases (domain name servers) that maintain the correlation between domain name addresses and numerical Internet protocol (IP) addresses.

Dynamic RAS Connector   A Microsoft Exchange Server component that routes messages between sites on the same local area network (LAN) using the Windows NT Remote Access Service (RAS).


e-mail addresses   The addresses by which recipients (mailboxes, distribution lists, custom recipients, and public folders) are known to foreign systems.

encryption   An advanced security feature that provides confidentiality by allowing users to conceal data. Data is encrypted as it resides on disk and travels over a network.


fault tolerance   The ability of a system to respond to an event such as a power failure so that information is not lost and operations continue without interruption.

firewall   A combination of hardware and software that provides a security system, usually to prevent unauthorized access from the Internet to an internal network or intranet.

foreign system   A messaging system other than Microsoft Exchange Server.

form   A structure for posting and viewing information. An example is a Send form, such as a purchase requisition.


gateway   Delivers messages from Microsoft Exchange Server to foreign systems.

global address list   Contains mailboxes, custom recipients, distribution lists, and public folders in an organization.


home server   The Microsoft Exchange Server computer that contains a user's mailbox.

Hypertext Markup Language (HTML)   A system of marking up, or tagging, a document so that it can be published on the World Wide Web. Documents prepared in HTML contain reference graphics and formatting tags. You use a Web browser (such as Microsoft Internet Explorer) to view these documents.

Hypertext Transfer Protocol (HTTP)   The set of conventions that World Wide Web servers use to send Hypertext Markup Language (HTML) pages over the Internet for display by a Web browser. This protocol enables a user to use a client program to enter a Uniform Resource Locator (URL) or to click a hyperlink to retrieve text, graphics, sound, and other digital information from a Web server.


inbound host   The host computer that provides a newsfeed.

Internet Message Access Protocol, Version 4rev1 (IMAP4rev1) Enables clients to access and manipulate messages stored within their private and public folders on a Microsoft Exchange Server computer.

information service   A tool that enables Microsoft Exchange Server and foreign systems to exchange mail.

information store   A Microsoft Exchange Server core component that stores users' mailboxes and folders. See also public information store, private information store.

Internet   The collection of networks and gateways that use Transport Control Protocol/Internet Protocol (TCP/IP) to handle data transfer and message conversion from the sending network to the receiving network.

Internet e-mail address   Consists of a user name and a domain name, with the two separated by an at (@) sign, such as

Internet Mail Service   A Microsoft Exchange Server component that enables users to exchange messages with Internet users. It can also be used to connect sites over any Simple Mail Transfer Protocol (SMTP) backbone.

Internet News Service   Enables Microsoft Outlook users and users of third-party Network News Transfer Protocol (NNTP) applications to participate in USENET newsgroup discussions.

intranet   A network within an organization that uses Internet technologies such as the Hypertext Transfer Protocol (HTTP) or File Transfer Protocol (FTP). Access to an intranet is available only to certain people, such as users within an organization.


key   Digitally signs and encrypts data for security-enabled users.

Key Management server (KM server)   A Microsoft Exchange Server computer installed with advanced security information.


Lightweight Directory Access Protocol (LDAP)   Enables LDAP clients to access directory information from a Microsoft Exchange Server directory.

local delivery message   A message sent between recipients that share the same home server.


mailbox   The delivery location for incoming messages.

message transfer agent (MTA)   A Microsoft Exchange Server core component that routes messages to other Microsoft Exchange Server MTAs, information stores, connectors, and third-party gateways.

Messaging Application Programming Interface (MAPI) A standard interface that Microsoft Exchange Server and Microsoft Outlook components use to communicate with one another.

messaging profile   A group of settings that provide Microsoft Exchange Server with information about a client's configuration.

Microsoft Mail Connector   A Microsoft Exchange Server component that provides connectivity to Microsoft Mail for PC Networks gateways and Microsoft Mail for AppleTalk Networks (also known as Quarterdeck Mail) gateways.

Microsoft Outlook Web Access   Interact with the ActiveX(tm) Server function built into Microsoft Internet Information Server. These components create Hypertext Markup Language (HTML) for a Web-based e-mail client on a Microsoft Exchange Server computer.

Microsoft Schedule+ Free/Busy Connector   Enables users to share free and busy information with one another.

multiple password policy   Enables administrators to configure the Key Management (KM) server to require multiple passwords to perform certain tasks.

Multipurpose Internet Mail Extensions (MIME)   A standard that enables binary data to be published and read on the Internet. The header of a file with binary data contains the MIME type of the data; this informs client programs (such as Web browsers and mail packages) that they connect process the data as straight text.


Network News Transfer Protocol (NNTP)   An application protocol used in TCP/IP networks. Enables clients to read and post information to USENET newsgroups.

newsfeed   The flow of items from one USENET site to another.

newsgroup   An Internet discussion group that focuses on a particular category of interest.

non-delivery report (NDR)   A notice that a message was not delivered to the recipient.

non-read notification (NRN)   A notice that a message was deleted before it was read.


object   A record, such as a site, server, connector, mailbox, or distribution list in the Microsoft Exchange Server directory.

offline address books   Contain the recipient objects found in any Recipients container in the directory.

organization   A collection of Microsoft Exchange Server computers grouped into sites.

outbound host   The host computer that receives a newsfeed.


permission   Authorization to access an object or perform an action.

Post Office Protocol version 3 (POP3)   Enables users with POP3 clients to retrieve mail from their Microsoft Exchange Server Inbox.

private information store   The part of the information store that maintains information in users' mailboxes.

profile   See messaging profile, user profile.

protocol   The part of an Internet address before the colon (such as http, ftp, and news) that specifies the access scheme for the address. Examples of protocols within an Internet address are: http://www.someones.homepage/default.html and news:alt.hypertext

public folder   A folder stored in the public information store; includes information such as messages, spreadsheets, graphics, and voice mail.

public folder affinity   Enables users in one site to open public folders on servers in other sites.

public folder replication   The process of updating identical copies of a public folder on multiple Microsoft Exchange Server computers.

public information store   The part of the information store that maintains information in public folders.


read receipt (RR)   A notice that a message was read by its intended recipient.

recipient   In the directory, an object that can receive messages and information. Recipients are mailboxes, distribution lists, custom recipients, and public folders.

remote procedure call (RPC)   Standard protocol for client/server communication; a routine that transfers functions and data between client and server processes.

replication   See directory replication, public folder replication.

revocation   Warns users when they receive signed messages from users whose advanced security has been revoked.

role   A group of permissions.

routing   The process of transferring and delivering messages.

routing table   Contains information that the MTA needs to route messages.


security context   An aspect of Windows NT Server that controls the type of access a user, process, or service has to system services.

service account   A Windows NT user account that is used to run Microsoft Exchange Server services.

signing   An advanced security feature that verifies the sender's identity and verifies that the message hasn't been modified during transit.

Simple Mail Transfer Protocol (SMTP)   A protocol used by the Internet Mail Service to transfer messages between a Microsoft Exchange Server site and an SMTP messaging system, such as the Internet.

site   One or more Microsoft Exchange Server computers (usually in the same geographical location) that share the same directory information.

Site Connector   A Microsoft Exchange Server component that enables users in sites on the same local area network (LAN) to exchange messages.

system attendant   A core maintenance service included with Microsoft Exchange Server.


target server   A Microsoft Exchange Server computer that acts as the end point of a connection between two sites.

temporary key   A random character string given to users to enable advanced security.

transaction log file   A file that provides fault tolerance in the event that data needs to be restored to the information store or directory databases.

trust relationship   The relationship between two domains that enables a user in one domain to access resources in another domain.


Uniform Resource Locator (URL)   An address of an object, document, or page or other destination. A URL expresses the protocol (such as Hypertext Transfer Protocol [HTTP]) to be accessed and where the destination is located. A URL may also specify an Internet e-mail address.

USENET   The collection of host computers and networks that exchange news articles organized by subject.

USENET site   One or more host computers that run the Network News Transfer Protocol (NNTP). A USENET site is different than a Microsoft Exchange Server site.

user account   Contains information such as the user name, password, group membership, and permissions.

user profile   A group of settings that provides the operating system with information about a client's configuration.


World Wide Web   The World Wide Web is a system for exploring the Internet by using hyperlinks. When you use a Web browser, the Web appears as a collection of text, pictures, sounds, and digital movies.


X.400 Connector   A Microsoft Exchange Server component integrated with the MTA that can be configured to connect sites within Microsoft Exchange Server, or to route messages to foreign X.400 systems.

X.400 Recommendations   Defines the standard interfaces of an electronic messaging system. These recommendations specify the structure of a message handling system, message structure and components, and the method used to transfer messages.

X.400 transport stack   Networking software required to support X.400 server-to-server message transport.