Thank you for the reply. I am trying to learn how to generate tracking reports. In the meantime, I did find that spam seems to be coming from email address <> (blank)
Example: 2015-01-24T15:22:54.522Z,Outbound,08D2059320C485A5,33,192.168.1.100:7104,xx.xx.xx.xx,>,MAIL FROM:<> SIZE=18173,
How...