Path: utzoo!mnetor!uunet!husc6!bloom-beacon!mit-eddie!ll-xn!ames!oliveb!epimass!jbuck From: jbuck@epimass.EPI.COM (Joe Buck) Newsgroups: comp.mail.headers Subject: Re: ! and @ -- which RFC ? Message-ID: <2052@epimass.EPI.COM> Date: 5 Apr 88 16:41:59 GMT References: <12798@brl-adm.ARPA> <4557@chinet.UUCP> Reply-To: jbuck@epimass.EPI.COM (Joe Buck) Distribution: na Organization: Entropic Processing, Inc., Cupertino, CA Lines: 32 In article <12798@brl-adm.ARPA> rick@seismo.CSS.GOV (Rick Adams) writes: >>You want to avoid mixing ! and @ if at all possible (and it is >>almost always possible) In article <4557@chinet.UUCP> les@chinet.UUCP (Leslie Mikesell) writes: >What if you have a bunch of uucp machines that only know ! addresses >and you don't want to store routing info on all of them anyway. One >machine can talk to the rest of the world, and some of the others are >two (local) hops away. For the most part, UUCP machines that do routing run the smail program and handle the domain!user convention (all the official UUCP-Internet gateways do). So yes, you can mail to an ARPA site using all-bang paths. Mail to me using ...!uunet!epimass.epi.com!jbuck, for example. This type of address is completely unambiguous (unless it goes through a rerouting mailer but that's another war); the details are discussed in the RFC by Mark Horton (forget the number). >Where you have machines a!b!c, is there an acceptable way for machine >a to request machine c to do its routing, assuming a and b only know >uucp ! addresses? Does the answer depend on b not knowing about @? See above. If c is your gateway machine and runs smail or other software that supports host.domain!user, you can just mail to a!b!c!host.domain!user. -- - Joe Buck {uunet,ucbvax,sun,}!epimass.epi.com!jbuck Old Internet mailers: jbuck%epimass.epi.com@uunet.uu.net