DNS filter - reverse dns lookups error in logs "A rating error occurs"

I'm trying to allow reverse DNS looks up in my DNS filter so that it stops spamming my logs.

I tried allowing:

simple in-addr.arpa,

regex .*\.in\-addr\.arpa,

regex .*\.in-addr\.arpa,

wildcard *.*.*.*.in-addr.arpa

None of these seems to work.

Anybody know of a way to stop these lookups?