Strange DNS Resolution Issues

[Revital Gorsht]

I'm not sure how to check this.  Some other ones that were failing: 
cisco.com, hotmail.com. 

But, if the problem was external, all of our servers (and others around 
the world) would've been unable to resolve these sites, no?  As I 
mentioned, only two were failing while the rest were resolving properly.




Barry Margolin <barmar at alum.mit.edu> 
Sent by: bind-users-bounces at lists.isc.org
08/04/2009 01:39 PM

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comp-protocols-dns-bind at isc.org
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Subject
Re: Strange DNS Resolution Issues






In article <grgauk$1udj$1 at sf1.isc.org>,
 Revital Gorsht <revital at yorku.ca> wrote:

> A few weeks ago, two of several internal DNS servers were suddenly 
unable 
> to resolve some external sites (eg microsoft.com, yahoo.com), while all 
> internal and other external sites (eg google.com) were resolving fine. 
> Since we couldn't pinpoint the cause, the problem went on for about 5 
> hours and then magically fixed itself... we were all left scratching our 

> heads.

Both those domains use CNAME chains that go through akadns.net.  Was 
this common to all the domains you had problems with?

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***
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