A component of Microsoft Exchange Server that enables Exchange users to access Usenet newsgroups as public folder content and make public folder content available as Usenet newsgroups. The Internet News Service governs newsgroup messaging between Exchange servers and Usenet hosts and enables Network News Transfer Protocol (NNTP) clients to download lists of newsgroups and read or post messages. It can also be used as a method for replicating public folder content between Exchange organizations.
If you plan to host Usenet newsgroups, be sure that you have adequate disk space to accommodate the large daily feed.