Return-Path: <discourse@bar.com>
From: Foo Bar [THIS IS INVALID] <discourse@bar.com>
To: reply+4f97315cc828096c9cb34c6f1a0d6fe8@bar.com
Date: Fri, 15 Jan 2016 00:12:43 +0100
Message-ID: <41@foo.bar.mail>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8

This email was sent with an invalid from header field.