adns debug: using nameserver 172.18.45.6 37.45.18.172.in-addr.arpa.test.iwj.relativity.greenend.org.uk. flags 0 type 12 PTR(raw) submitted 37.45.18.172.in-addr.arpa.test.iwj.relativity.greenend.org.uk. flags 0 type 65548 PTR(checked) submitted 37.45.18.172.in-addr.arpa.test.iwj.relativity.greenend.org.uk. flags 0 type PTR(raw): OK; nrrs=1; cname=$; owner=$; ttl=60 ptr.test.iwj.relativity.greenend.org.uk 37.45.18.172.in-addr.arpa.test.iwj.relativity.greenend.org.uk. flags 0 type PTR(checked): Domain invalid for particular DNS query type; nrrs=0; cname=$; owner=$; ttl=60 rc=0