barmar at alum.mit.edu
Thu Sep 21 22:58:19 UTC 2006
In article <eeu92l$1kbe$1 at sf1.isc.org>,
"Shaheen" <wael.shaheen at gmail.com> wrote:
> Mark Andrews wrote:
> > These will almost always be the result of a bad delegation.
> What do yuo mean by bad delegation? the domains am trying to resolve
> are not hosted on my servers, they are external domains.
He means that there's some mismatch between the way that the domain is
delegated and the actual configuration of the servers it's delegated to.
It's not your problem, it's a problem with those external domains --
their DNS administrators have screwed up in some way.
> > > 3- Some records are cached even though TTL is expired.
> > You are confused. Named will not return a expired record.
> I also have internal DNS server the same version and let me give you an
> example about what happened.
> example.com = 184.108.40.206 then changed to 220.127.116.11
> from internal DNSexample.com resolves to 18.104.22.168, but External DNS
> still resolves to 22.214.171.124
> when i restart the daemon or rndc flush it starts resolving to 126.96.36.199
That means that the TTL of the old record hasn't expired yet. What was
the TTL of the 188.8.131.52 record, and how long did you wait after changing
Barry Margolin, barmar at alum.mit.edu
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