I have a workflow rule with an outbound message action and an email alert. I'm receiving the email but the outbound message doesn't seem to hit my web service (IIS log stopped showing activity).  If I hit the web server, I see the activity but I'm not seeing anything from SalesForce (Jakarta).

Also, there are no entries in the outbound messaging monitor.

How do I verify that messages are being sent?  Is there a log that shows every outbound message and the message body?