Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!wang!fitz From: fitz@wang.com (Tom Fitzgerald) Newsgroups: comp.mail.uucp Subject: Re: UUCP path cost reduction Message-ID: Date: 2 Aug 90 22:22:34 GMT References: <11@aupair.cs.athabascau.ca> Organization: Wang Labs, Lowell MA, USA Lines: 56 > fitz@wang.com (Tom Fitzgerald) writes: >> Some of the things I >> definitely want to cut are: >> reduce: >> ...!site1!...!dom.ain!... >> to: >> ...!site1!dom.ain!... >> if site1 is known to be on the Internet and at least 2 hops can be removed, lyndon@cs.athabascau.ca (Lyndon Nerenberg) writes: > NO! If you are going to use the UUCP transport, please use the published > UUCP transport routing tables (aka comp.mail.maps). If you use the above > method when sending mail to *.athabascau.ca, your message will cost MORE Sorry, but it vastly improves 95% of our paths, at the expense of increasing the cost of the last 5%. In your own news articles, you're putting "...@cs.athabasca.ca" in your return address, so return mail from here will get to you via your Internet forwarder regardless. Only mail to lyndon@atha.UUCP would have tried to take the UUCP route. Doesn't 90% of your mail reach you via your forwarder anyway? Since all Internet sites, and all the UUCP sites that don't maintain complete paths files will use it, it seems like only a small fraction of the mail will get there through Canadian sites. I really am trying to minimize the harm, that's why I'm only rewriting addresses that save 2 hops - rewrites that only save a single hop will be skipped. That doesn't help mail from me to you though, since I can save 2 hops by delivering the mail to you via the Internet. By doing this, I can crunch addresses like these, drawn from our paths file: orac2 bu.edu!harvard!rutgers!ksuvax1!phobos.cis.ksu.edu!orac2!%s pur-phy bu.edu!harvard!ames!pur-ee!newton.physics.purdue.edu!%s caesar bu.edu!harvard!ames!indri!uakari!caesar.cs.montana.edu!%s into: orac2 bu.edu!phobos.cis.ksu.edu!orac2!%s pur-phy bu.edu!newton.physics.purdue.edu!%s caesar bu.edu!caesar.cs.montana.edu!%s and about 100 more like it. It's worth it to me. How about if I create a stop-list for addresses to skip rewriting, and put your node in it, as well as anyone else who complains? Rewriting for your address will be explicitly disabled. This sounds like the best of both worlds. It won't fix mail to ...@cs.athabasca.ca, though. It'd be better if my filter knew which sites really are on the Internet, and which are on the other end of an MX link, but the paths don't tell me that. --- Tom Fitzgerald Wang Labs fitz@wang.com 1-508-967-5278 Lowell MA, USA ...!uunet!wang!fitz