7bit Notice the line marked in red. This is the most important part of the header that SpamCop cares about. This is called a received line .
Some email messages have only one received line, some have more than one.
They can be used to track the email back along its path to the origin. Without this information, SpamCop can do nothing. The received line portion of the header always contains SOME kernel of truth. SpamCop separates the kernel from the chaff in order to find the true source of the spam.