When it takes a to deliver email via your web based "Outlook", you are doing it wrong. You might as well go back to Fidonet:
Send: Tue, 17 Sep 2013 21:02:45 +0000 Received: Wed, 18 Sep 2013 20:59:40 -0500
Seriously?
Return-path: <user@domain.com>
Envelope-to: support@otherdomain.net
Received: from ... (helo=goodmailserver.com)
...for support@otherdomain.net; Wed, 18 Sep 2013 20:59:40 -0500
Received: from [...] (helo=mssuxweb.outbound.protection.outlook.com)
... Wed, 18 Sep 2013 21:02:27 -0500
Received: from mssux01.namprd08.prod.outlook.com (...) by
mssux01.namprd08.prod.outlook.com (...) with Microsoft SMTP
Server (TLS) id ... Thu, 19 Sep 2013 02:02:14 +0000
Received: from mssux.namprd08.prod.outlook.com ([...]) by
mssux01.namprd08.prod.outlook.com ([...]) with mapi id
... Thu, 19 Sep 2013 02:02:13 +0000
Subject: RE: test
Date: Tue, 17 Sep 2013 21:02:45 +0000