Another big step toward interoperability with the Internet would be a host requirements document similar to RFC 1123 that describes a number of required software systems and the specifications of such systems. I know that this appears on the surface to be somewhat fascist on the part of the NIC, but in the interest of interoperability something like this needs to be done. One thing I would insist be on this BRFC (BITNET RFC) would be a RFC822-conversant MTA. The software is available at no/minimal cost for all the major OS types on the net, and most of the minor OS' as well. Any others? (BTW, why not register .BIT.NET and use the MX scheme Michael Gettes described? It'd be a minimal change in semantics but bring us into closer conformance with the Internet folks. It *is* fudging .NET a bit...oh, well.)