From owner-freebsd-questions Sat Aug 25 7: 6:41 2001 Delivered-To: freebsd-questions@freebsd.org Received: from illuminati.is.co.za (illuminati.is.co.za [196.36.198.65]) by hub.freebsd.org (Postfix) with ESMTP id 92FFF37B406 for ; Sat, 25 Aug 2001 07:06:37 -0700 (PDT) (envelope-from geoff@illuminati.is.co.za) Received: by illuminati.is.co.za (Postfix, from userid 1001) id 2243B190; Sat, 25 Aug 2001 16:06:34 +0200 (SAST) Date: Sat, 25 Aug 2001 16:06:34 +0200 From: Geoff Rehmet To: freebsd-questions@FreeBSD.ORG Subject: Re: Secondary DNS Transfers Message-ID: <20010825160634.A53802@illuminati.is.co.za> References: <5.1.0.14.0.20010824185811.06796d88@mail.Go2France.com> <006d01c12d4b$b2073b20$1401a8c0@tedm.placo.com> <5.1.0.14.0.20010825143818.037e8cd8@mail.Go2France.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.2.5i In-Reply-To: <5.1.0.14.0.20010825143818.037e8cd8@mail.Go2France.com>; from LConrad@Go2France.com on Sat, Aug 25, 2001 at 02:48:16PM +0200 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sat, Aug 25, 2001 at 02:48:16PM +0200, Len Conrad wrote: > > Taking down a DNS primary for some days to see if the slave is answering is > not an efficient validation. And anyway, the slave will answer with > whatever copy of the zone file it has, which is not necessarily the > masterīs version. Actually, something that your secondary may get ratty with you for - we have 20 000 zones on our name servers, of which well over 10 000 zones are slave zones. If someone switches off their primary, that causes our secondaries to spend more work trying to transfer zones. (At the moment, we have well over 100 zones still where the transfers from the primary are failing for various reasons, and yes, that has caused a large number of lame delegations because of zone files expiring etc.) It's actually shocking how many of the admins of zones that we secondary don't even realise that their zones are not loading on their servers after they edited the zone file, and didn't check it for errors! Geoff. -- Geoff Rehmet, Internet Solutions tel: +27-11-283-5462, fax: +27-11-283-5401 mobile: +27-83-292-5800 email: geoffr@is.co.za URL: http://www.is.co.za To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message