Information sent from one Usenet host to another to replicate newsgroup listings and content. Newsfeeds are an essential part of the Usenet architecture; they allow news servers all over the Internet to exchange lists of newsgroups and messages. Usenet newsfeeds come in two types:
The host that provides the newsfeed is called the inbound host; the host that receives the newsfeed is called the outbound host.
Microsoft Exchange Server supports downloading Usenet newsfeeds through the Internet News Service.