I used my laptop at a different location over the weekend. I connected to a wifi network which was BT. I kept getting error messages saying I was using a DNS server out of their servers, i could not load any websites so i gave up. I am back on my home network now and when i try to load certain websites, i think maybe a couple of the same websites i tried to connect to with the BT wifi, I am getting the same error message. The message reads exactly like this
You are seeing this page because you are using a BT service which requires the use of BT DNS Servers and it appears that you are attempting to connect using a DNS server outside of our network.
Our BT Protect and BT Parental Controls services both require the use of our BT DNS to keep you safe online.
You may have selected a different server in your network settings or installed an application that uses an alternative service.