First of all many thanks to all the developers out there for creating such a awsome future like PI-HOLE.
Now to my questions is it possible for me to use all the blocking mode availble. Here is my setup in the pihole TFL conf
BLOCKINGMODE=NULL-IP-NODATA-AAAA-IP-NXDOMAIN
Is it good or bad with this setup or should I only use the IP-NODATA-AAAA? or are my config runnible?
If you do not want to display a blocking page, then NULL is the best choice. This is the default on a new Pi-Hole installation since the developers found it provided the best performance.
If you want to display a blocking page, then BLOCKINGMODE=IP-NODATA-AAAA should provide the best performance while also displaying a blocking page.