Date: Fri, 23 Oct 2009 10:08:10 -0700 From: Chuck Swiger <cswiger@mac.com> To: Sean Cavanaugh <Millenia2000@hotmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: DNS Question Message-ID: <18641935-9899-495F-9465-A7A10AA6A6D8@mac.com> In-Reply-To: <BAY126-W12706A30D1794B2638ABC3CABD0@phx.gbl> References: <200910231717.AA243925902@mail.Go2France.com> <BAY126-W12706A30D1794B2638ABC3CABD0@phx.gbl>
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Hi-- On Oct 23, 2009, at 9:18 AM, Sean Cavanaugh wrote: >> worse, it's illegal. > > how is this illegal? if you are residing your domain on a hosting > service, this makes sense to me. Granted its bad form and should > have an A record to the host for the main domain record, but if i > had control over "otherdomain.com" and not "example.com" and had to > change the IP address, "example.com" would be dead until i was able > to reach the owner of that domain and have them change their DNS info. You aren't supposed to use CNAMES for anything found in other RR's; in particular, you should always use an A record with the hostnames used for nameservers (ie, have an NS record), because you are supposed to be using the canonical name rather than an alias. See: http://docstore.mik.ua/orelly/networking/sendmail/ch21_03.htm#SML2-CH-21-SECT-3-2 You might also find a discussion of webserver redirects and the like interesting: http://www.aitechsolutions.net/cname-serveralias-redirection.html Regards, -- -Chuck PS: It's odd where google pulls up references to fairly canonical docs, sometimes. I'm not sure I even recognize "ua", and I suspect I deal with two-letter ISO 3166 country names more than most folks do. Maybe Ukraine? :-)
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