[IMGate] mailpolice down?

[Len Conrad]

Dec  3 13:18:09 mx1 postfix/smtpd[79839]: warning: 
inline.com.bulk.rhs.mailpolice.com: RBL lookup error: Name service error 
for name=inline.com.bulk.rhs.mailpolice.com type=A: Host not found, try again

I've seen this on two sites I admin.