From owner-freebsd-isp Fri Sep 29 5: 4:21 2000 Delivered-To: freebsd-isp@freebsd.org Received: from hq.seicom.net (hq.seicom.net [194.97.200.30]) by hub.freebsd.org (Postfix) with ESMTP id C80CA37B423; Fri, 29 Sep 2000 05:04:15 -0700 (PDT) Received: from andy by hq.seicom.net (8.9.3/8.9.3) with SMTP id OAA18402; Fri, 29 Sep 2000 14:04:03 +0200 (CEST) From: "Andy Wolf" To: "James Wyatt" , "Jan Knepper" Cc: , Subject: RE: DNS: having domain1.com and domain1.net point to the same IP. Date: Fri, 29 Sep 2000 14:03:29 +0200 Message-ID: <001301c02a0d$480b5ea0$f1d761c2@andy.seicom.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 Importance: Normal Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org 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 ----- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message