Other Services
Two services that are used on many Windows NT TCP/IP networks are DHCP configuration servers and mail servers. The purpose of these services and the protocols they are built on is discussed in Chapter 3. In this section we investigate what information must be passed to the users so that the client systems can be successfully configured, and how the network administrator determines that information.
Planning Your Mail System
The TCP/IP protocol suite defines the tools you need to create a reliable, flexible electronic mail system. Servers improve reliability. It is possible to create a peer-to-peer TCP/IP email network in which every end system directly sends and receives its own mail. However, relying on every system to deliver and collect the mail requires that every system be properly administered and consistently up and running. This isn’t practical, because many small systems are off-line for large portions of the day. Most networks use servers so that only a few systems need to be properly configured and operational for the mail to go through.
The terminology that describes email servers is confusing because all of the server functions usually occur in one computer, and all of the terms are used interchangeably to refer to that system. In this text we differentiate between these functions, but we expect you will do all of these tasks on one system. We use this term in the following manner:
- mail server
The mail server collects incoming mail for other computers on ...
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