Path: utzoo!attcan!uunet!husc6!ukma!david From: david@ms.uky.edu (David Herron -- One of the vertebrae) Newsgroups: comp.mail.uucp Subject: Re: active rerouting Message-ID: <10262@s.ms.uky.edu> Date: 18 Sep 88 21:51:19 GMT References: <4740@b-tech.UUCP> <4747@b-tech.UUCP> <4748@b-tech.UUCP> <6581@chinet.UUCP> <2105@edsews.EDS.COM> <915@psuhcx.psu.edu> Reply-To: david@ms.uky.edu (David Herron -- One of the vertebrae) Organization: U of Kentucky, Mathematical Sciences Lines: 44 In article <915@psuhcx.psu.edu> wcf@psuhcx (Bill Fenner) writes: >In article <2105@edsews.EDS.COM> roberts@edsews.EDS.COM (Ted Roberts) writes: >|In article <6581@chinet.UUCP>, les@chinet.UUCP (Leslie Mikesell) writes: >|> Suppose >|> you want siteC to route siteA!siteB!siteC!domain.dom!user or >|> siteA!siteB!siteC!user@domain.dom. >|These are not the same thing. The first route would send to siteA, then >|siteB, then siteC and siteC would route to user@domain.dom which they >|would know how to do since they know how to resolve domain addresses >|(you hope:-). The second would attempt to send to domain.dom, then to >|siteA, then to siteB, then to site C, then to user. This is because the >|"@" syntax takes precedence over the "!" syntax. >Who says? I don't think any of the RFC's mention ! syntax at all. Ever hear of RFC-976? It talks about how the UUCP network works and a couple of ways of inter-operating with the Internet. It's all FULL of !'s. >If your >site is a smart site, running sendmail or smail, then @ will usually have >precedence over !. but UUCP-only sites only understand !'s, and only look >for !'s. To answer Leslie's question in the first place - inews will change >siteA!siteB!siteC!user@domain.dom to ..siteC!domain.dom!user, to get around >this exact problem... it changes the address to all !'s, if it needs to. You're partly right. I think there are sites out there which are sensitive to the route the mail came through. Such a site would give precedence to ! on mail coming over a UUCP link and to @ on mail coming over other sorts of links. Personally I don't understand why they would want to make it different like that, but the RFC doesn't specify a precedence. Instead the RFC says to avoid the issue altogether by using either pure user@domain forms or host!host!domain!user forms, and not to mix. -- <---- David Herron -- One of the MMDF guys<---- ska: David le casse\*' {rutgers,uunet}!ukma!david, david@UKMA.BITNET <---- What does the phrase "Don't work too hard" <---- have to do with the decline of the american 'work ethic'?