Re: [Exim] Hiding Source IP in RFC 822 Mail headers

Jason Ostrom wrote:
> How could I use my Exim MTA to do error detection, correction, or
> notification of this, or is there no way of getting around this when
> the sender's UA or MTA has modified the headers?
>

You can't rely on anything in the Received: headers at all,
realistically speaking. Any MUA can create any set of Received: headers
it wants (including none at all), and nothing ever "verifies" them.