Base URL Capability
The Base URL is the address end users apply when navigating to the user interface. The repository manager only uses this value to construct absolute URLs to your user interface inside of email notifications. The most common reason why the address would be different is if you have a reverse proxy that terminates HTTP requests at an address different from where the repository manager is running.
To set the Base URL:
Go to Settings → Capabilities.
Search for an existing Base URL capability and select it if it exists or click the Create Capability button.
Choose Base URL and click Continue.
Select the Enable this capability checkbox and enter a new URL value.
Select Create.