In order to add a hostname or IP to the dynamic whitelist, you must first add the hostname or IP in the file: /etc/asl/dyn-whitelist. This can be done via the command line on your server. You will need to be logged in a root or have the correct permissions.
You must also go into the /etc/asl/config file and search for the FW_DYN_WHITELIST line and make sure to set it to "yes".
A cron job is used on the server that will add this hostname or IP. When you are finished with the steps above, please run this command so the updated information is implemented.
asl -s -f