I have mail forwarded from the host "alien.sensor.com" to another mail provider. Spamcop always chokes at the intermediate forward as below. I've tried but I can't figure out for the life of me how to get alien (which I really have no access to other than it is a forwarder) to be recognized as one of my own hosts.
3: Received: from alien.sensor.com (alien.sensor.com [192.107.237.2]) by smtp.sensor.com (8.14.1/8.14.1) with ESMTP id l9PMUNoU026803 for <x>; Thu, 25 Oct 2007 18:30:23 -0400
No unique hostname found for source: 192.107.237.2
Possible forgery. Supposed receiving system not associated with any of your mailhosts
Will not trust anything beyond this header