On Fri, Oct 17, 2008 at 4:36 AM, Simon Waters <[EMAIL PROTECTED]> wrote: > On Thursday 16 October 2008 19:58:58 Nicholas Accad wrote: >> >> I noticed something recently, due to me moving to a work environment >> where everything is Microsoft based. > > Welcome to hell.
And I'm not even the sysadmin anymore, I though hell was reserved for those, but nooooo... > >> To be exact, my own domain, has one alias that points to >> ghs.google.com, at home using OpenDNS it resolves fine, from several >> dedicated Linux boxes it also works OK, but on two occasions, two >> completely different networks, that CNAME will not resolve if the >> internal nameserver is Windows. > > "Out of crystal balls" error. Which record? What version of Microsoft DNS, > what platform. > Anything with a chained CNAME try docs.accad.org for example, it resolves fine until I use M$ as a resolver. I have no idea what version of the DNS is, my knowledge of Windows Server is limited, I am a Linux/FreeBSD guy really. It is either 2000 or 2003, with AD. I tried this on 3 laptops, one running XP, the other running OSX 10.4, and now on OpenSuSE 11, so it is not the client side. >> So I am wondering, where is the problem exactly? And what can be done >> - if anything - to solve it. > > Most likely the Microsoft network is using WINS, or some other curious name > resolution scheme and picking up some internal reference. > > Are the two networks with the issue completely independent? Or could they have > shared WINS data in the past? My personal domain is giving the company LAN issues? :) I'm good, but not that good. The two LANs I am talking about are completely isolated, different companies in fact, I doubt they even know of each other, the only connection is that I work at one and my wife works at the other. The only similarity AFAIK is they are both Windows networks. The curious thing - I test this on my Linux laptop - is that 'host' barfs, but I specifically tell it to look for CNAMEs, it works, it just does not follow the CNAME to resolve to the A record, and after I tell it to look for CNAME, then it resolves fine. # host docs.accad.org Host docs.accad.org not found: 3(NXDOMAIN) # host -t CNAME docs.accad.org docs.accad.org is an alias for ghs.google.com. #host docs.accad.org docs.accad.org is an alias for ghs.google.com. ghs.google.com is an alias for ghs.l.google.com. ghs.l.google.com has address 74.125.47.121 Now here is something worthy of a big WTF, the first try fails, the second one works AFTER I request a CNAME it seems like M$DNS requests ONLY the A record, and if it fails, it does not try to look for other record types. So maybe something is really screwed up with the cache? I notice that if I look up www.microsoft.com, it always works, which makes sense since 500 computers running Windows will probably make something like 1000 requests per minute for that domain. Oh well, I thought I'd pick some of your brains, just to make sure I'm not going crazy (debatable since I'm a sysadmin). Thank you everyone. _______________________________________________ domains-gen mailing list [email protected] http://discuss.tucows.com/mailman/listinfo/domains-gen
