IIS (Internet Information Services)The Microsoft Web service for publishing information on an intranet or the Internet, and for building server-based Web applications.
IM (Instant Messaging)The Exchange 2000 service that allows for real-time messaging and collaboration between users.
IMAPA protocol that defines an email server and a way to retrieve mail from it. IMAP is a more recent and more advanced standard for mail storage than POP.
impersonationThe ability of a thread to run in the security context of a security principal different from the security principal that started the process.
In-Country/Region Number FormatThe string that is used to define how to create an in-country/region number to use when making calls from a dial plan. [Exchange 2007]
in-place upgradeIn Exchange Server documentation, this is the scenario in which you upgrade to a newer version of Microsoft Exchange software on a single computer.
inbound hostThe host computer that provides a newsfeed. [Exchange 5.5]
inbound recipient filteringA recipient filter that reduces unsolicited e-mail by filtering inbound information based on the recipient, and applicable only to e-mail messages sent by…
InetOrgPersonAn Active Directory object that is similar to the Windows user object, but has extended attributes to improve compatibility with directory services that…
information serviceA tool that enables Exchange and foreign systems to exchange mail. [Exchange 5.5]
information storeAn Exchange core component that stores users' mailboxes and folders. See also public information store, private information store. [Exchange 5.5]
Information Store ViewerA tool that shows the properties available for each message, how you can use them, and in what format they appear.
informational announcementAn audio message that is played when a user first dials in to a Unified Messaging system that describes some temporary condition of interest to all users.
install manifestThe install.xml file, resident in the IBM® Lotus® Notes® installer's deploy directory, that lists all features ("installfeature" elements) available…
Intelligent Message FilterThe underlying technology of the Exchange Server content filter that evaluates inbound mail and assesses the probability that an inbound e-mail message is…
International Access CodeThe prefix that is used to direct a call internationally. The International Access Code is 011 in the United States and 00 in much of the rest of the…
International Number FormatThe string that is used to define how to dial someone from outside of their country/region. [Exchange 2007]
InternetA worldwide network of networks that all use the TCP/IP communications protocol and share a common address space.
Internet e-mail addressConsists of a user name and a domain name, with the two separated by an at (@) sign, such as username@company.com. [Exchange 5.5]
Internet Key ExchangeA protocol that establishes the security association and shared keys necessary for two parties to communicate with Internet Protocol security (IPSec).
Internet Mail ServiceAn Exchange component that enables users to exchange messages with Internet users.
Internet News ServiceEnables Microsoft Outlook users and users of third-party Network News Transfer Protocol (NNTP) applications to participate in USENET newsgroup discussions.
InteroperabilityThe ability of systems, units, or forces to provide services to or accept services from other systems, units, or forces and to use the services so…
intranetA private network that uses Internet-related technologies to provide services within an organization.
IPWithin the peritoneal cavity (the area that contains the abdominal organs). Also called intraperitoneal.
IP address/TCP port combinationA combination of attributes that uniquely identifies Simple Mail Transfer Protocol (SMTP), Network News Transfer Protocol (NNTP), Internet Message Access…
IP Allow listA filtering list that is used by the Connection Filter agent in Exchange Server 2007.
IP Block listA filtering list that is used by the Connection Filter agent in Exchange Server 2007. IP addresses on the IP Block list are considered spam.
IP BypassPardon IP addresses from SMTP authentication enabled on any domain. This is often used to allow clients who have applications that do not support SMTP…
IP gatewayA third-party hardware device or product that connects a legacy PBX to a LAN. An IP gateway translates or converts TDM or telephony circuit-switched…
IP4RA DNS lookup that attempts to determine if a mail server is likely to be sending spam.
IWA (Integrated Windows Authentication)An authentication method in which the user name and password, also called credentials, are hashed before they are sent over the network.
JET (Joint Engine Technology)Defines the low-level access to underlying database structures in Exchange Server 4.0 and 5.0.
JetstressA tool that can be used to verify the performance and stability of a disk subsystem before putting an Exchange server into production.
journal data formatJournaling is enabled at the mailbox store level. To enable journaling, you must enter a mailbox where the journalized messages are sent.
journal recipientThe journal recipient for the sender's mailbox database will receive a complete record of all recipients who receive a copy of a message sent by that…
journalingA function of e-mail systems (such as Microsoft Exchange and Lotus Notes) that copies sent and received items into a second information store for…
Journaling agentA compliance-focused agent that is configured to journal e-mail messages that are sent or received by departments or individuals in an Exchange Server…
journaling effect on user mailbox serversWhen journaling is enabled in a mailbox database and a user who has a mailbox on that mailbox database sends a message, the server generates two messages…
junk e-mailUnsolicited commercial e-mail (UCE). Also known as spam. [Exchange 2007]
keyA block, often used in a series, which projects beyond the edge of the enframement of an opening and is joined with the surrounding masonry.
keyboard shortcutA key or combination of keys that a user can press to perform an action that is available from a menu.
KilllistA list of domains that are denied access to the mail server.
labelThe FDA approved label is the official description of a drug product which includes indication (what the drug is used for); who should take it; adverse…
LCR (local continuous replication)Local continuous replication (LCR) is a single-server solution that uses built-in technology to create and maintain a copy of a storage group on a second…
LDAPA protocol for accessing directory information. LDAP or Lightweight Directory Access Protocol is used by browsers and email clients to look up email…
LDAP directoryA hierarchical directory of names that can reflect an organization's structure or geography and that is accessed via the LDAP protocol.
letterheadA preset design that appears at the top of an e-mail message.
libraryA collection of cells, usually bacteria or yeast, that have been transformed with recombinant vectors carrying DNA inserts from a single species.
Lightweight Directory ServicesA stand-alone directory service that is designed specifically for use with directory-enabled applications.
link state informationInformation about the state of messaging routes (links) in an Exchange Server 2003 messaging system that is determined using the link state algorithm to…
link state tableThe database used on each Exchange Server 2003 server to store link state information propagated by the link state algorithm.
LinkAccessA feature that allows access to SharePoint documents and sites and documents on shares inside of a corporate network through Outlook Web Access when it is…
linked connectorIn Exchange Server 2007, a Receive connector that is linked to a Send connector.
List ServerA list server (mailing list server) is a program, or a feature in a program, that handles subscription requests for a mailing list and distributes new…
local applicationA Notes application stored on your computer's hard disk drive, on a disk, or on a networked file server.
local delivery messageA message sent between recipients that share the same home server. [Exchange 5.5]
local replicaAn application that is located on the workstation in use.
location documentA document in a user's Personal Address Book that contains communication and other location-specific settings used when users work with Notes in a…
log inTo connect to a computer system or network by entering identification and authentication information at the workstation.
lossy failoverAn unscheduled outage of a clustered mailbox server (CMS) in a cluster continuous cluster (CCR) environment in which data was lost. [Exchange 2007]
LSA (Link State Algorithm)The algorithm used to propagate routing status information between servers running Exchange 2000.
mail contactA mail-enabled Active Directory contact that contains information about people or organizations that exist outside an Exchange Server organization.
Mail ListA mailing list is a list of people who subscribe to a periodic mailing distribution on a particular topic.
mail userA mail-enabled Active Directory user that represents a user outside the Exchange organization. Each mail user has an external e-mail address.
mail-enabledAn Active Directory object that has at least one e-mail address defined. If the user is mail-enabled, the user has an associated e-mail address, but does…
MailboxAn area on a storage device where email is placed. In email systems, each user has a private mailbox.
mailbox databaseA database for storing mailboxes in Exchange Server. The mailbox database manages the data in mailboxes, tracks deleted messages and mailbox sizes, and…
mailbox delivery queueA group of temporary queues that hold messages that are being delivered to a Mailbox server by using encrypted Exchange RPC.
Mailbox server roleAn Exchange Server 2007 server role that provides e-mail storage and advanced scheduling services for Microsoft Office Outlook users.
mailbox storeA database for storing mailboxes in Exchange. Mailbox stores store data that is private to an individual and contain mailbox folders generated when a new…
mailbox userA mail-enabled Active Directory user object that has mailbox attributes. [Exchange 2007]
mailbox-enabledAn Active Directory object that has an Exchange mailbox associated with it; therefore it can both send and receive messages within the Exchange system.
Mailer DaemonA Unix program used in the management of e-mail messages. Not generally encountered by a user unless the user gets a bounced message.
Mailing ListA collection of e-mail addresses of people who have asked to receive regular mail discussions on a particular topic, and for which they can sometimes…
Mailing List ManagerAn automated program to handle the administrative functions of adding/removing subscribers, disseminating the message postings, sending topic related and…
MailtoA HTML tag that allows visitors to a site click on a link that creates a new message in their default email client.
managed content settingsSettings that are applied to the managed folders in users' mailboxes to control the retention and journaling of messages for messaging records management…
managed custom folderA type of managed folder that is created by an Exchange administrator and placed in a user's mailbox for messaging records management (MRM) purposes.
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…
manager accessThe highest level that can be assigned in an IBM® Lotus® Notes® access control list.
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.