Date: Fri, 29 Sep 2000 14:03:29 +0200 From: "Andy Wolf" <Andy.Wolf@nextra.de> To: "James Wyatt" <jwyatt@rwsystems.net>, "Jan Knepper" <jan@digitaldaemon.com> Cc: <freebsd-questions@FreeBSD.ORG>, <freebsd-isp@FreeBSD.ORG> Subject: RE: DNS: having domain1.com and domain1.net point to the same IP. Message-ID: <001301c02a0d$480b5ea0$f1d761c2@andy.seicom.net> In-Reply-To: <Pine.BSF.4.10.10009282348500.43354-100000@bsdie.rwsystems.net>
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Hello,
> The reverse addresses all seem to point to the *.freebsd.org hosts and the
> *.freebsd.net and *.freebsd.com entries are just CNAMEs that point to
> *.freebsd.org A records.
just keep in mind that a CNAME doesn't allow MXs or even SOAs for the same
label. Therefor a CNAME cannot be used for the zone itself. We have had some
trouble with that a while ago. Nameserver lookups with "dig" do resolve
correctly but "nslookup" tells that the answer is non-authoritativ if you
use a CNAME for the zone like that:
--- broken example !
@ IN SOA my.name.server my.host.master ...
IN CNAME mail.my.zone
mail IN A ...
IN MX 100 ...
--- broken example !
We use two A records now and therefor accept redundancy. The reverse lookup
of course can only point to one of the labels.
bye...Andy
--
Andy Wolf, Software Development Baden-Wuerttemberg
Nextra Baden-Wuerttemberg tel.: +49(0)711/6015-0
Communication Service Provider GmbH fax : +49(0)711/6015-199
Nadlerstr. 21, D-70173 Stuttgart
----- http://www.nextra.de ----- mailto:andy.wolf@nextra.de -----
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