I have mail in my outbound queues (exchange server 2003) that shows the sender as "email@example.com". I need to ascertain which workstation on the network is actually sender these emails (100's of them). Virus scans come up clean. I suspected a couple workstations as the culprit, but there is nothing I can find on their PC's to validate this. Sent folders are normal. No virus reported.
How can I looked at one of these stuck in the outgoing queues and determine which workstation (all with static ip's if that helps) sent the message?