# File lib/openid_connect/client/registrar.rb, line 124
      def validate_contacts
        if contacts
          include_invalid = contacts.any? do |contact|
            begin
              mail = Mail::Address.new(contact)
              mail.address != contact || mail.domain.split(".").length <= 1
            rescue
              :invalid
            end
          end
          errors.add :contacts, 'includes invalid email' if include_invalid
        end
      end