If it, indeed, the Outlook Express (Internet Mail provider), remember the Internet Mail Provider is an avast! resident provider and it is not just the corresponding service. If you have Internet Mail running and stop the "avast! Mail Scanner" service, you disable the scanning of e-mails, but you don't turn the provider into "stopped" state (rather "waiting for a subsystem to start"). Similarly, if Internet Mail is stopped, you cannot start it just by starting the "avast! Mail Scanner" service.
