Enabled—Specifies whether the account partner provides incoming user principal names (UPNs). Select the check box if the account partner provides UPNs. Clear the check box if the account partner does not provide UPNs.
Accept all domain suffixes—Specifies that all domain suffixes are accepted for mapping to the UPN claim.
Reject all domain suffixes—Specifies that all domain suffixes are rejected for mapping to the UPN claim.
Accept some domain suffixes—Specifies that some domains are accepted for mapping to the UPN claim. To add more domains to this list, type the appropriate domain suffixes.