myLittleAdmin from a Plesk domain is unreachable at mssql.example.com. One of the following errors is shown in a browser:
The MXToolBox DNS Lookup shows that a DNS record for mssql.example.com cannot be found. The same does the "nslookup" utility:
C:> nslookup mssql.example.com 188.8.131.52
*** google-public-dns-a.google.com can't find mssql.example.com: Non-existent domain
The DNS zone example.com is hosted on an external DNS server.
There is no A-type DNS record for mssql.example.com on the external DNS server or said record has not been propagated yet.
Note: If you are a domain owner, contact your service provider for assistance.
Add the A record for mssql.example.com on the external DNS server, which is responsible for the zone example.com.
If the A record exists, wait for DNS propagation. The propagation status for a domain can be checked at Global DNS Propagation Checker.
As a workaround, add '
203.0.113.2 mssql.example.com' record in the hosts file on the workstation where Plesk Panel is opened: