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Chapter 12.
Running a News Server
directed to them personally. This chapter covers a different type of messaging
system:news servers. Where e-mail is a
one-to-one correspondence, news (or Usenet news or Netnews, as it's often
called) is a one-to-many transmission medium. A user may post a message to a news server, and any user of that
news server may then read that message. What's more, news servers often
communicate amongst themselves, resulting in propagation of messages across the
world. Whether you run a news server that's only used locally or one that's
connected to others, news servers can provide a useful group communication
system for your users.Traditional news servers talk to each other
as equals, exchanging all messages in newsgroups. These servers support
multiple clients on the same or other computers, which read a small subset of
all messages. One variant on a regular news server is a program that connects
to a conventional news server as a client in order to download only a subset of
the messages that the local users want to read. Such miniature news servers are
often run on personal computers to permit offline
news readingrather than connect to the Internet and stay connected while
reading news, the system can connect, download messages, and allow the user to
read them while disconnected. This approach can minimize network connection
times, which can be important if you're billed by the minute.NOTE
align=left border=0> Although the preceding discussion refers to
news as a one-to-many communications tool and e-mail as a one-to-one tool,
e-mail is somewhat more flexible than this. You can specify multiple
recipients for your e-mail, for one thing. There's also a tool, known as a mailing list, that allows for the creation of a
group discussion similar to news. Mailing lists are typically set up to
support special interest groups, and their subscription methods aren't quite
as standardized as news group subscriptions.
