Google is your friend and a valuable tool
http://www.google.co.uk/search?q=SOUNDMAN.EXE there are many hit some suggest malware others a sound file, so you would have to investigate the files location and purpose.
If you don't have Outlook automatically check for email then you shouldn't get any inbound email without your having initiated a check for email or send email.
I don't use Outlook so I can't say much on its function, in OE right clicking on the email in the list and select properties can give access to the email source, which includes headers. Unfortunately you need to be looking at the header information of the actual email that was bounced not the Daemon's mail. So it isn't easy, it is more important to ensure that you aren't sending out emails.
The windows firewall is better than no firewall, I wouldn't give it the time of day as it doesn't provide any outbound protection and that is what you need to stop unauthorised access to the internet. Zone Alarm free
http://www.zonelabs.com works fine with avast and has a reasonably friendly user interface. There are others, Comodo, Jetico, Sunbelt Kerio, etc.
See some firewall tests for comparison, some are freeware but many are paid for versions
http://www.firewallleaktester.com/tests.php. Also see
http://www.thefreecountry.com/security/firewalls.shtmlAny malware that manages to get past your defences will have free reign to connect to the internet to either download more of the same, pass your personal data (user names, passwords, keylogger retrieved data, etc.) or open a backdoor to your computer, so outbound protection is essential.
