I'm getting hammered by emails from someone that I can't get their address to block them. When I try to block them I can't. The site is IJR (Independent journal review) but I have tried to send them emails and gotten no where! They just keep filling my inbox with political newsletters. When trying to find their address this is what I get. The technical sender is different than the email address in 'From'. As 'From' can be faked, the technical sender is also displayed to understand who actually sent this email. What do I do to get them out of my inbox?