[Exim4U] rate limits

Hi I just wanted to check if I want to rate limit and block authenticated senders with a run away virus can I just pop this in acl_check_rcpt: # Keep authenticated users under control deny authenticated = * ratelimit = 100 / 1d / strict / $authenticated_id log_message = Sender $sender_address Emails sent $sender_rate Your limit is Per day is $sender_rate_limit I did test it on a standard exim install and seemed to work fine. Pretty much straight off the exim manual or does exim4u all ready have some thing in place for this ? Thanks Terry