Use country for email policy in exchange 2016
set-emailaddresspolicy -identity "MyEmailPolicy" -RecipientFilter {(CountryCode -eq 191) -and (Company -eq 'Contoso ltd') -and (RecipientType -eq 'UserMailbox')}
windows:servers:exchange:exchange_email_policy
set-emailaddresspolicy -identity "MyEmailPolicy" -RecipientFilter {(CountryCode -eq 191) -and (Company -eq 'Contoso ltd') -and (RecipientType -eq 'UserMailbox')}