Use the Custom Whitelist Exception area in the Whitelist Categories (optional) page to delete all the domains from a custom whitelist exception category.
Note
You can delete all the domains from a custom whitelist category only using the Web UI.
In the Web UI, choose Settings > SSL Intercept.
Click Whitelist Categories (optional).
Click Custom Whitelist.
In the table, select all the domains to delete from the custom whitelist as exceptions.
Click Delete Domain.
The domains are deleted from the custom whitelist exception category.