jamesbcox1980
asked on
Why has my network stopped resolving certain DNS routes?
We have an S3 account where we store the content for our website. Yesterday, I noticed that the content isn't working, so I started looking into it. I found out that the DNS is pointing to the correct place, and the DNS host said that the request was being blocked somewhere between our router and the host. We put in a ticket with our ISP and they put in a ticket with theirs. Eventually, someone found the block and removed it.
Now, our nameserver is looking to itself to find the next server in the route, but since we flushed it and deleted the cache, it has no information to resolve. If we bypass the nameserver and set the nameserver as our ISP's nameserver, it resolves just fine. What can we do to get it working again? Yesterday, traceroute would get halfway and find the block, then get no response. Now, it gets "Unable to resolve target system name content.*********.com"
Now, our nameserver is looking to itself to find the next server in the route, but since we flushed it and deleted the cache, it has no information to resolve. If we bypass the nameserver and set the nameserver as our ISP's nameserver, it resolves just fine. What can we do to get it working again? Yesterday, traceroute would get halfway and find the block, then get no response. Now, it gets "Unable to resolve target system name content.*********.com"
what happen to the hints file?
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ASKER
We deleted the cache, so the hints file is gone, and the server is not refreshing it as it should. It refreshed everything but our content DNS. We put in a ticket with Ergos as well, to make sure it wasn't their fault. I'm going to go over your information and get back to you shortly. Thanks.
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For future reference:
Next time you want to flush your cache, just right click it and select "Clear Cache" instead of deleting it.
Next time you want to flush your cache, just right click it and select "Clear Cache" instead of deleting it.
ASKER
Sorry, I misspoke, we did "clear" the cache rather than deleting it. My mistake. We have tried forcing it to refresh and copy from another server, but it isn't working.
what you copied from other server?
ASKER
We created a new hints file and replaced the old one. We forced a refresh and after about 2 hours it copied everything from the top server. Apparently the file was corrupted. Thanks to you both!