Hello
your internal DNS server need to be able to resolve external names.
For that in "DNS Manager", right-click on your server name and choose "properties".
Two way to achieve that :
1) if you know the dns server of your provider (lets say "dns.provider.com"), then go on the "forwarders" tab, click on edit and add this name (or ip). You could also input there a public dns (google for it, for example you can use 8.8.8.8).
2) make your server resolve the names by itself in having nothing in that "forwarders" but making sure the "Use root hints if no forwarders are available" is checked (the "Root hints" tab is filled-in with the root-servers by default, don't change it !)
If you still have problems, make sure in the "Advanced" tab that "Disable recursion" is UNchecked, and lastly that your server is able to access the internet on port TCP/53 and UDP/53 (do you have any firewall with outbound rules in place ?)
Best regards,
Pierre
