Microsoft Exchange 2000 Server enables Microsoft Outlook users to participate in online discussions over the Internet using Network News Transfer Protocol (NNTP) newsgroups. Exchange also enables users running client applications that support NNTP to access newsgroup public folders available on Exchange servers.
Users can read and post messages and documents to NNTP newsgroups, which are represented in Exchange as public folders; for example, you can exchange information with your customers by posting frequently asked questions to a newsgroup public folder. Your internal sales support staff can answer questions and customers around the world can relate their own experiences. Items in the newsgroup can be replicated to Usenet host computers in newsfeeds.
To learn more about NNTP in Exchange: