Neat idea but I (and like 1% of the Internet population so it's clearly of utmost importance!) connect to GMail over IPv6 so you won't catch that even if they l

Neat idea but I (and like 1% of the Internet population so it's clearly of utmost importance!) connect to GMail over IPv6 so you won't catch that even if they leak. On a related note, I run an exim server and it adds Received: from my_unix_username by my.server.hostname with local (Exim 4.80) to the headers when I send mail directly from the server with mutt. Is there any reason to hide it? Or not to remove it?