Check ability to resolve domain names
Following instruction on this page you can test if your host can resolve domain names (such as patientsknowbest.com) to an IP address.
On the machine that runs the service run below command:
nslookup my.patientsknowbest.com
The command will query a name server for our address. Which name server is picked depends on the confguration of your system/network.
TIP: Run:
nslookup my.patientsknowbest.com sonia.ns.cloudflare.com
ornslookup my.patientsknowbest.com shane.ns.cloudflare.com
to query one of the authorative nameserver for patientsknowbest.com
.
Expected success output
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
Name: my.patientsknowbest.com
Address: 35.246.122.93
The Address: 35.246.122.93
bit indicate that the domain name can can be resolved to an IP address.
Expected failure outputs
Time out
nslookup my.patientsknowbest.com
;; communications error to 127.0.0.53#53: timed out
Missing record
Missing domain