Spamcop is reporting No source IP address found, cannot proceed.
But I can see the source host name and resolve it to an IP, why is this happening?
Received: from alb-dmz1.massey.ac.nz (Not Verified[10.100.252.3]) by tur-mm4.massey.ac.nz with Trustwave SEG
id <B576897500001>; Tue, 21 Jun 2016 13:24:32 +1200
Received: from apn-77-112-51-51.dynamic.gprs.plus.pl (alb-cfw1-managed.massey.ac.nz [10.100.3.228])
by alb-dmz1.massey.ac.nz (Postfix) with ESMTP id 8BA0710A8
for <firstname.lastname@example.org>; Tue, 21 Jun 2016 13:24:31 +1200 (NZST)