Date: Wed, 30 Jan 2002 21:25:06 -0600 (CST) From: Ryan Thompson <ryan@sasknow.com> To: Alex Toushek <toushek@canadiangeneral.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: DNS Reverse Message-ID: <20020130211755.N7978-100000@catalyst.sasknow.net> In-Reply-To: <9768EC34F9F5E44AB692F96C07562E1A015ED5@lemonjello.cangen>
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Alex Toushek wrote to freebsd-questions@FreeBSD.ORG: > [...] > other with out the working reverse records. How can I confirm that I > am setup correctly. This is driving me nuts and I am getting a lot > of rejected mail from my hosts because it cannot resolve the IP > correctly to the domain? Your question is a bit confusing, but I think you're really asking "how can I confirm that my IP address(es) reverse-resolve to (the correct) hostnames". You can verify this is set up according to your own system by triggering the resolver. Try "nslookup 192.168.0.1" for starters, where 192.168.0.1 is an IP address in question. This isn't a complete test, but it's easy, and if it comes back empty, or with incorrect information, it's definitely time to dig around in your own configuration. When you need more information, use dig(1). Point dig at your nameservers to start with, then at your upstream's nameservers, then at other nameservers that have little or nothing to do with your network or upstream. You should be able to quickly find out which nameservers have incorrect/inconsistent information, and fix it (or have someone fix it). Read the dig man page for common usage, and detailed instructions. If you want a more comprehensive answer, you might try posting the IP address (or range) in question to the list, as well as what they're SUPPOSED to resolve to, so someone like me can do our own queries and figure out where the problem lies. - Ryan -- Ryan Thompson <ryan@sasknow.com> Network Administrator, Accounts SaskNow Technologies - http://www.sasknow.com #106-380 3120 8th St E - Saskatoon, SK - S7H 0W2 Tel: 306-664-3600 Fax: 306-664-1161 Saskatoon Toll-Free: 877-727-5669 (877-SASKNOW) North America To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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