North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Selection of Appropriate Local SMTP Relay
I hear it was one of the first Internet's ideas - to declare well-known addresses in addition to the well known ports. On Mon, 10 Jan 2000, D'Arcy J.M. Cain wrote: > Date: Mon, 10 Jan 2000 14:23:24 -0500 (EST) > From: D'Arcy J.M. Cain <[email protected]> > Reply-To: [email protected] > To: John R. Levine <[email protected]> > Cc: [email protected], [email protected] > Subject: Re: Selection of Appropriate Local SMTP Relay > > > Thus spake John R. Levine > > That's much too complicated. What we need are some well-known IP > > addresses, analogous to well-known ports, that are not routable on the > > global Internet, but that are assigned to standard services within > > each network, e.g.: > > > > 10.255.255.1 - DNS server > > 10.255.255.2 - SMTP server > > 10.255.255.3 - SOCKS server > > 10.255.255.4 - Web proxy > > > > (Probably it's not a good idea to use network 10 here, better to > > reclaim a /24 from the swamp or allocate a fresh one.) > > > > Now you set up your mail client to use 10.255.255.2 for SMTP, and wherever > > you're connected, it'll be the local SMTP server. > > > > >Advantages > > > > 0. Works with all existing mail clients, no code changes needed, just a > > one-time configuration. Once this is widely accepted, MTAs would > > ship with it as the factory default. > > > > Some people have suggested something similar with a well-known-service > > pseudo-TLD that each network's DNS servers would serve up with the > > appropriate values for that network, e.g. > > > > smtp.wks > > socks.wks > > webproxy.wks > > > > I like that less because, as previously noted, lots of people never > > change their DNS config when they switch ISPs or roam, so they'd get > > the info for the wrong network. Better to use IPs which you know will > > be routed by the routers for the network to which you are actually > > connected. > > Why not both? Instead of a private TLD, make a real one (wks.merit.edu?) > and assign the numbers there. That way it doesn't matter who your DNS > server is. > > -- > D'Arcy J.M. Cain <[email protected]{druid|vex}.net> | Democracy is three wolves > http://www.druid.net/darcy/ | and a sheep voting on > +1 416 425 1212 (DoD#0082) (eNTP) | what's for dinner. > > Aleksei Roudnev, (+1 415) 585-3489 /San Francisco CA/
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