[vchkpw] some info off topic error for simscan..

[Remo Mattei]

I get this error in my qmail-smtp log
 simscan:[1]:PASSTHRU (-2.30/4.50):0.7219s:Delivery Status Notification
(Failure):70.143.10.204::
can anyone suggest what could cause this?

Thanks,
Remo