In article <griomf$jr...@sf1.isc.org>, Revital Gorsht <revi...@yorku.ca> wrote:
> I'm not sure how to check this. Some other ones that were failing: > cisco.com, hotmail.com. dig www.cisco.com ;; ANSWER SECTION: www.cisco.com. 1377 IN CNAME www.cisco.com.akadns.net. www.cisco.com.akadns.net. 32 IN CNAME origin-www.cisco.com. origin-www.cisco.com. 33366 IN A 198.133.219.25 dig www.hotmail.com ;; ANSWER SECTION: www.hotmail.com. 2208 IN CNAME mail.live.com. mail.live.com. 3128 IN CNAME toplevel.mail.live.com.akadns.net. toplevel.mail.live.com.akadns.net. 580 IN CNAME origin.mail.live.com. origin.mail.live.com. 2058 IN A 64.4.20.169 origin.mail.live.com. 2058 IN A 64.4.20.184 origin.mail.live.com. 2058 IN A 64.4.20.186 origin.mail.live.com. 2058 IN A 64.4.20.174 > > 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. Maybe those two servers had cached something bad in the delegation to akadns.net. It's hard to say after the fact. If it happens again, dump your cache. > > > > > Barry Margolin <bar...@alum.mit.edu> > Sent by: bind-users-boun...@lists.isc.org > 08/04/2009 01:39 PM > > To > comp-protocols-dns-b...@isc.org > cc > > Subject > Re: Strange DNS Resolution Issues > > > > > > > In article <grgauk$1ud...@sf1.isc.org>, > Revital Gorsht <revi...@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, bar...@alum.mit.edu Arlington, MA *** PLEASE don't copy me on replies, I'll read them in the group *** _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
