Spam emails being sent out through my Excahnge 2010 server
I have an Exchange 2010 server and it is now sending out emails by the hundreds from one internal email address that we actually use for our backups. It is email@example.com. I need help getting this to stop or correcting this. I am just not sure where to go. This is actually an email address that we used to use and have but no longer do.