This window allows you to add or edit entries in the Whitelist or Blacklist.
Email address – The email address to add/edit.
Name – The name of the entry.
Whole domain – Select this option for the entry to be applied to the whole domain of the contact (not only to the address specified in the Email address field, but all email addresses at the address.info domain).
Lower level domains – Select this option for the entry to be applied to the lower level domains of the contact (The address.info represents domain, while my.address.info represents a subdomain).