Milter-greylist

I’ve noticed that the following new top level domains as 100% spam:

.rocks
.click
.xyz

Sad thing is, milter-greylist doesn’t appear to be able to catch them with these configuration settings:
racl blacklist domain /.*\.rocks$/ msg "Sender domain suffix .rocks is full of spammers”

or

racl blacklist from /.rocks$/ msg “Sender domain suffix .rocks is full of spammers”

Am I doing something wrong with either of those rules and are there others that you have seen?

Bill