From: Mallory <mallory@example.org> To: Daniel <daniel@example.org> Subject: fake root message Message-ID: <001-fake-message-root@example.org> In-Reply-to: <nonexistent-message@example.org> References: <000-real-root@example.org> <001-child@example.org> <nonexistent-message@example.org> Date: Thu, 16 Jun 2016 22:14:41 -0400 This message has an in-reply-to pointing to a non-existent message