By default, it wants all locally generated news to be sent to groucho.edu . However, as groucho.edu does not carry the fj groups, there's no point in sending it any messages from those groups. Today, Usenet has grown to enormous proportions. Sites that carry the whole of Netnews usually transfer something like a paltry 60 MB a day. So let's take a look at the way most Unix systems handle Usenet news.
News begins when users create and post articles.
Each user enters a message into a special application called a newsreader, which formats it appropriately for transmission to the local news server. But it's also possible to write the article directly into a file in a special directory called the news spool. Once the posting is delivered to the local news server, it takes responsibility for delivering the article to other news users. News is distributed through the net by various transports. The medium used to be UUCP, but today the main traffic is carried by Internet sites.