Configuring Domain Security settings
With Domain Security you can control access to the system by configuring allowed or blocked email domains for external entity users.
When you add an external entity user to the system or when the external entity user signs in, the system checks their email domain against the Domain Security list.
Changing the domain list can restrict current users from accessing the system.
Set up either an allowed domain list or a blocked domain list.
If you set up an allowed domain list, existing and newly created external entity users must have email domains on this list to access the system. All other domains are restricted.
If you set up a blocked domain list, existing and newly created external entity users must not have a domain on this list to access the system. All other domains are permitted.
These are steps to set up Domain Security for the external entity tenant level: