North American Network Operators Group|
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Re: Underscores in host names
On Thu, 19 May 2005, Brad Knowles wrote: > > Check Guinea-Bissau for .gw. This has been a source of heartburn for > many years. Any site that has a mail gateway system and uses unqualified > hostnames is at risk, because mail to "fred@gw" could legitimately be > interpreted two different ways, and mail could be mis-directed. > > I did some consulting at a major wall street trading firm that had > this problem, and the only reason we ever found out that something truly > bizarre was going on was because we were getting back these bounces which we > couldn't explain, because we knew for sure that the user portion was > legitimate. Then we started looking closer at where the bounces were actually > coming from. This reminds me of the problems with JANET-order versus Internet-order mail domains that caused some email for cl.cam.ac.uk to go via Chile. Tony. -- f.a.n.finch <firstname.lastname@example.org> http://dotat.at/ BISCAY: WEST 5 OR 6 BECOMING VARIABLE 3 OR 4. SHOWERS AT FIRST. MODERATE OR GOOD.