Some spam emails can't be processed by SC: "No source IP address found, cannot proceed." in SpamCop Lounge Posted May 13 22 hours ago, remay said: I don't know if my hosting company is correct or not! I find it hard to believe that email can be delivered like this. Does anyone else experience this? If you look at the email headers, notice there is "X-SmarterMail" processing that has taken place. Could THAT processing be whacking the email headers? I have not seen any missing headers in my emails. It is customary to place the headers by the receiving email server. The problem you will have with your hosting company not providing that information is you do not know the IP of where the spam came from. Not knowing the IP makes it unreportable. Per RFC2076 section 3.4, your hosting company should not be modifying any existing headers, but per the email, it does appear they are modifying and removing them. If might be good if they were to bring their server into RFC compliance.