No reporting addresses found for 188.8.131.52, using devnull for tracking. in SpamCop Reporting Help Posted February 12 2 hours ago, RobiBue said: yeah, that's why I'm saying, I believe that injected Received line acts somewhat as a signature placed there by the designer of the malware... that IP might, at one time, have been assigned there... I don't know if there is a historical IP database available but I understand now what you meant. thanks. Reporting the IP address results in this address coming up: email@example.com I have tried reporting this IP address several times last year and a few times an employee said they will "Null-route" the IP address. But it still shows up in spam.