This one is very obvious as a fake - because:
- the From-Address said FedEx
- the Mail-From address was not FedEx
- the Reply-Address was not FedEx
- the Bounce-Address was not FedEx
- the Sending Server's name was not FedEx
- the Hello was not FedEx. A "hello" occurs for each incoming email. When an email arrives, our 1USA mail server answers "Hello, this is 1USA. You have a message to deliver here?" and the sending server identifies itself with an ACK (acknowledgement) then begins to transfer the email file.
During this transmission, 1USA's mail server can read the message's headers... and has the itelligence to say "OK, it looks legitimate" or it can perform various other functions to either verify the sender or reject the email.
In the case of faked companies like FedEx, airlines, ebay, paypal, banks, etc. we normally reject the email back to the sender if the email is 'certainly' not from a legitimate source.