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Terminology Changes

Exchange Organization is a term that is still used. As with previous versions of Exchange, this term still defines the entry point, or root, where Exchange 2000 objects are placed into Active Directory.

Address Book Views (ABVs) have been replaced with Address Lists. This is more than a name change because Address Lists are based on LDAP queries of the Active Directory (AD). Address Lists are discussed in detail later in this chapter.

Address Book Views (ABVs)—This limited method of grouping Exchange objects is replaced with Address Lists in Exchange 2000.

Address Lists—A logical grouping of AD objects based on an LDAP query.

LDAP—Lightweight Directory Access Protocol. A standards-based protocol that can be used to interact with conformant directory services.

Distribution Lists are now called groups. These groups are AD Group objects, and can be a collection of users, groups, and/or contacts. Groups are covered in detail later in this chapter.

The Exchange 5.x site was an entity that defined the boundaries for both administration and routing. The site has now been split into a combination of new collections called Administrative Groups and Routing Groups. Admin Groups are used for system management, whereas routing groups are used for message flow. This separation is one of the big advantages of Exchange 2000 over its predecessors.

Exchange 5.x—This term is used to reference previous versions of Exchange 5.0 and 5.5. Many 5.x features were also in version 4.0, even though 4.0 is not mentioned in this chapter.

The Internet Mail Service (IMS), formerly known as the Internet Mail Connector (IMC), is not to be found in Exchange 2000. Instead, the SMTP transport functionality is delivered through Exchange SMTP virtual servers. The ability for a single Exchange 2000 server to host multiple SMTP virtual servers is a huge design improvement. This new capability provides architects with much more flexibility than in the past.

IMC—Internet Mail Connector. Was in version 4.0 of Exchange Server. The name was changed to Internet Mail Service in the 5.0 product. The IMC connects Exchange 4.0 to SMTP hosts, like those used on the Internet.

IMS—Internet Mail Service. Microsoft redesigned the Internet Mail Connector, further integrating it into Exchange starting with version 5.0. The redesign warranted a new name, because the former connector was becoming a core part of the product. With Exchange 2000, SMTP is at the core of the product.

SMTP—Simple Mail Transport Protocol. A standards-based protocol that allows for the transfer of messages between different messaging servers.

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