Unable to remove a block policy from DNS

elhanan

New Member
Joined
Nov 5, 2021
Messages
3
Hello there, I added some domain name to be blocked in my network and I used the following command to do that:
Add-DnsServerQueryResolutionPolicy -Name "BlockListPolicy" -Action IGNORE -FQDN "EQ,*.somedomain.com" -PassThru
After I have done that in powershell that domain is filtered out not to be accessed. But after a moment I wanted to allow it so I executed the following command:
Remove-DnsServerQueryResolutionPolicy -Name "BlockListPolicy" -PassThru

I restarted my DNS Server, and still that website cannot be accessed. Can someone help me with this please...
 
Solution
I would make sure you clear the DNS cache on the client side with Clear-DNSClientCache.
Removing the policy can take a very long time depending on how many zones and any other policies. (as in days some times).
You can also flush the DNS server cache with Clear-DNSServerCache.

Otherwise I'd look at wireshark and filter on DNS.
raju2529 said:
Check the names are added in hosts file under system32\drivers\etc\hosts
Click to expand...
Hello thanks for your reply, DNS server's hosts file or my own PC hosts file? cause I didn't set that in my PC but I don't know about the DNS Server if the policy by default do that.
 
I would make sure you clear the DNS cache on the client side with Clear-DNSClientCache.
Removing the policy can take a very long time depending on how many zones and any other policies. (as in days some times).
You can also flush the DNS server cache with Clear-DNSServerCache.

Otherwise I'd look at wireshark and filter on DNS.
 
Solution
I only have 8 Zones and its been already 5 days since I removed the policy. I tried Clear-DNSServerCache(I didn't restarted the dns server though in case that might be the case) it still not working.
 
You just need to edit the system's hosts file like @Varadharajan mentioned above.
 
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