From owner-freebsd-questions Thu May 11 11: 4:47 2000 Delivered-To: freebsd-questions@freebsd.org Received: from dipsy.monkeybrains.net (rururudy-3.dsl.speakeasy.net [216.231.57.145]) by hub.freebsd.org (Postfix) with ESMTP id E679E37B512 for ; Thu, 11 May 2000 11:04:43 -0700 (PDT) (envelope-from rudy@dipsy.monkeybrains.net) Received: from localhost (rudy@localhost) by dipsy.monkeybrains.net (8.9.3/8.9.3) with ESMTP id LAA01485; Thu, 11 May 2000 11:09:47 -0700 (PDT) (envelope-from rudy@dipsy.monkeybrains.net) Date: Thu, 11 May 2000 11:09:46 -0700 (PDT) From: Rudy Rucker To: Mitch Collinsworth Cc: Marius Vincent , freeBSD-Questions Subject: Re: Block and reverse DNS. In-Reply-To: <200005111549.LAA86229@larryboy.graphics.cornell.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 11 May 2000, Mitch Collinsworth wrote: > Basically, there > is nothing special about reverse lookups except for converting the IP > address into in-addr.arpa notation before starting. There is one unique difference. If you have a Class C address, and reserve a domain through Internic, it is easy to specify what DNS server that domain should use. If you Get a Class C address, and wish to host the in-addr.arpa you are at the *mercy* of your upstream provider's technical support team. It took Verio 3 months to corrently configure their DNS servers to slave off of my DNS server. Tips (based purely on my situation, your's may be different): 1) My upstream provider insists on doing reverse DNS, so they have to be set up as a slave to my master DNS server. 2) The NS field in your in-addr.arpa record is important. The upstream provider may not be able to pull your records unless they have an NS field in your reverse lookup record. eg: IN NS ns.YOURUPSTEAM_PROVIDER.com This is true for forward as well as reverse lookups. Rudy To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message