(Corrections, notes, and links for Usenet RKT.)
by Mib Software, INN customization and consulting
USENET is not a physical network, but rather a logical network resting on top of several existing physical networks. These networks include, but are not limited to, UUCP, the Internet, an Ethernet, the BLICN network, an NSC Hyperchannel, and a BERKNET. What is important is that two neighboring systems on USENET have some method to get a new message, in the format listed here, from one system to the other, and once on the receiving system, processed by the netnews software on that system. (On UNIX systems, this usually means the rnews program being run with the message on the standard input. <1>)
It is not a requirement that USENET hosts have mail systems capable of understanding the Internet mail syntax, but it is strongly recommended. Since From, Reply-To, and Sender lines use the Internet syntax, replies will be difficult or impossible without an Internet mailer. A host without an Internet mailer can attempt to use the Path header line for replies, but this field is not guaranteed to be a working path for replies. In any event, any host generating or forwarding news messages must have an Internet address that allows them to receive mail from hosts with Internet mailers, and they must include their Internet address on their From line.
RFC1036 4.1. Remote Execution
RFC1036 4.2. Transfer by Mail
RFC1036 4.3. Batching
<1> UNIX is a registered trademark of AT&T.
RFC1036: [Source:"RFC-1036"] [Last Changed:December 1987] [Copyright: 1987 M. Horton, R. Adams]
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