Microsoft Exchange 2000 Instant Messaging Service offers a fast
and simple way for users on a TCP/IP network to participate in
live, or real-time, conversations—just as they do on a telephone or
in a chat room. Instant messages are received immediately at the
recipient's desktop, regardless of what application the recipient
may be using. Instant Messaging complements e-mail the same way the
telephone complements postal mail; however, unlike e-mail messages,
instant messages are as immediate and interactive as a face-to-face
Instant Messaging also allows users to track each other's
Perhaps the most apparent difference between
Instant Messaging and e-mail service is that instant messages are
just that: instant. Instant Messaging servers pass messages
immediately to the recipient just as a router forwards packets from
one network to another. E-mail messages, on the other hand, must be
stored on one or more servers—however briefly—as they make their
way to their destination. For more information, refer to
Microsoft Exchange 2000 Server Planning and Installation.
Only in the most basic sense. As with Instant
Messaging, you can use Net Send to send a message to someone
on the network. However, Net Send has no way of determining
presence information: whether that user is at his or her computer
to receive the message. Furthermore, Net Send is strictly a
LAN-based messaging utility, which means that you can use it only
to send messages on a Windows network. You cannot use it to
communicate with users over the Internet.
Presence information identifies and
communicates the status of a user on the Instant Messaging network.
Users can be online, out of the office, busy, and so on. Some
status indicators, such as Busy and Away From
Computer, essentially convey the same information as the
away notification in a chat room or the Do Not
Disturb icon in a NetMeeting conference.
You need a Microsoft Windows 2000 server
running Exchange 2000 Server and Internet Information Services (IIS). Although
you typically install Instant Messaging on a member server, you can
also install it on a domain controller. For more information, refer
to Microsoft Exchange 2000 Server Planning and
To send and receive instant messages, users
must install an Instant Messaging client, such as MSN Messenger.
Microsoft also provides solutions for other client platforms such
as Outlook 2000. For more information on Microsoft clients for
Instant Messaging, refer to
The Instant Messaging home server and router
are the two types of virtual servers on an Instant Messaging
network. The home server hosts Instant Messaging user accounts and
is the computer through which users send and receive instant
messages and communicate presence information. The Instant
Messaging router forwards or redirects messages and presence
information to home servers on the network. More...