In this list you can:
- Enable / Disable countries you want to appear in select lists
- Determine Preferred countries that will always appear at top of lists
- Set a trust status for each country: Unknown, Trusted, Suspect, Blocked
Several actions will be blocked if a request (HTTP request) comes from a blocked country (as reported by a helper plugin such as GeoIP Plugin).
See Blocking actions from spammers.
The blocking is done by function
antispam_block_by_country() through the
antispam_block_request() function and the GeoIP plugin.
When a user creates an account from a suspect country, he can automatically be put into a special group, which may have restricted permissions.
The country is also checked at each new login. If he logs in from a suspect country, he can automatically also be put into the special group automatically, even if he created the account from a cleared country.
See Tools > Antispam > Settings.