I have created a dashboard incorporating few external domains I am receiving the error message like the dashboard is attempting to receive content from outside of splunk.the content urls are not in the dashboards trusted domains list.
Add a domain or URL to the Dashboards Trusted Domains List using Splunk Web.
In Splunk Web, navigate toSettings > Server settings > Dashboards Trusted Domains List.
Enter a name. The name is a label for the corresponding domain or URL.
SelectSave. This saves all changes to the Dashboards Trusted Domains List page since the last page update, including any domains or URLs that you have added or removed.