Could not connect to 184.108.40.206: Connection timed out
Attempting to run traceroute. If the traceroute fails persistently,
then it's likely that the ISP where it fails is subscribed to the BGP3 version
of the RBL, and is blocking RBL'ed hosts at the IP level. You should ask
if that is indeed what they are doing. If so, then you do not need to use
DNS blocking of the RBL.