We get that error on just one particular website, ALL other websites are reachable. Using Chrome, FF, IE, none of them can get to that particular website. So, on one pc, I flushed DNS and set it to use 220.127.116.11, and then the site could be reached. We have had all our pc's set to use an internal server as the DNS server, and then that server uses 18.104.22.168. So obviously it's something with a pc pointing to an internal server as an intermediate DNS server, but again, we only have this issue with one website, and the DNS settings have been this way forever. Ideas?