You can test the virus attached with SEP in outlook, for that you can download the test virus file " Eicar.com" is the good place to get the file.
After downloading you will need to attach the file to the email and send it to some one or yourself.
The Virus file wont be detected on the Exchange server end, it would be detected by your client while sending or at the client where the e-mail is recived, you will need to enable and disable the outlook autoprotect while doing this.
For exchange server we have another software thats SMS that will detect the threat on Exchange server.
By default outllook has its own security and blocks some well know test viruses, you will need to make sure you disable that option from registry.. there are many documents on Google for that..
Please let me know if you need any more assistance on this