Return-Path: From: Foo Bar To: category@foo.com Subject: This is a foo topic Date: Fri, 15 Jan 2016 00:12:43 +0100 Message-ID: <53@foo.bar.mail> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hey, this is an incoming email that will be ignored ;)