Re: Mixed format addresses

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Article #3433

#3433

From: David Barr
Date: Sun, 20 Dec 1992 15:18

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1665 bytes

In article <1992Dec19.163210.12770@becker.GTS.ORG> uucpadm@becker.gts.org writes:
>	It seems logical for sites which are Internet/UUCP
>	gateways to declare MX records for all the systems
>	that they publish in their pathalias map entries -
>
>
>		sitex.uucp.	MX	10	mail.mysys.mydom.
>		sitey.uucp.	MX	10	mail.mysys.mydom.
>		...
>
>	I know we don't do this at my workplace, but there
>	seems no obvious reason not to do so.

	Most mailers are configured by default to not do DNS lookups on
certain specified domains.  (Most notably .UUCP, .BITNET, and the
now-gone .CSNET)  This is to save undue wear-and tear on the root
nameservers.

	Even if this were not so, with DNS there's no way for one site
to just "declare MX records" for .UUCP and have them be seen by just
anyone.  _One_ site has to be declared as "authoratative" for entire
.UUCP pseudo-domain in order for anything to work consistently.  How is
my mailer going to know what nameserver to look at to resolve the MX
for "becker.UUCP"?

--Dave
-- 
System Administrator, Population Research Institute    barr@pop.psu.edu
	What if there was no such thing as a hypothetical question?

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Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!uwm.edu!psuvax1!atlantis.psu.edu!barr
From: barr@pop.psu.edu (David Barr)
Subject: Re: Mixed format addresses
Message-ID: <saw1Htccib@atlantis.psu.edu>
Sender: news@atlantis.psu.edu (Usenet)
Organization: Penn State Population Research Institute
References: <1gg7eeINNfve@gaia.ucs.orst.edu> <-ng1H!zgcb@atlantis.psu.edu> <1992Dec19.163210.12770@becker.GTS.ORG>
Date: Sun, 20 Dec 92 15:18:19 GMT
Lines: 29

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