So here's the situation. An email was sent from a computer within our organization yesterday and we were subsequently marked as spam because of it. We don't know who sent it. We don't know when it was sent (but have an approximate time) and therefore don't have a copy of the e-mail. And we don't know how to track it back.
I'm a programmer and so IT is not my domain, but the programmer in me screams that there's got to be a way to trace this back to the origin. We're running on MS Exchange.
Is it possible to trace this e-mail back to the sender? And how can we do it?!