The email router is a component of CRM and is installed separately. Say for eg, there is a router installed, make couple of CRM users (A&B) to use Email router as their Incoming and outgoing access types.
Login to CRM as user A and open an email activity and send email to user B.(ensure that these users do not have outlook client for CRM installed).
Verify if the user B receives the email. If he does, then there are higher possibility of presence of email router.
Now login to outlook as user B. Open the received email, click on File - properties and take a look at the internet headers which will be as below.
MIME-Version: 1.0
From: First name Last name <Administrator@micronet.local>
To: Ramesh Xavier <RameshXavier@micronet.local>
Date: Fri, 1 Feb 2013 14:36:23 -0500
Subject: test CRM:0001001
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: base64
Message-ID: <e3de1aa4-c339-4597-bc8d-dcd402814943@MicroDC.micronet.local>
Return-Path: Administrator@micronet.local
X-MS-Exchange-Organization-AuthSource: MicroDC.micronet.local
X-MS-Exchange-Organization-AuthAs: Anonymous
From the above internet header, you can notice couple of lines which are as below
Content-Type: text/html; charset="utf-8"
Content-Transfer-Encoding: base64
These lines are added by the email router code. So, you now know that if you see the internet header on the received email like the one above, it means that the email was processed by the email router for sure.
