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.
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…
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…
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).
anonymous userA non-validated user who is not recognized by the server, and who can access only published folders and address lists. [Exchange 2003]
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.
authenticationThe process of validating the credentials of a person, computer process, or device.