[IMail Forum] Spam/Relay question

[Kris McElroy]

I have a question that you guys may be able to help me out with.  I am looking at my log files for my IMAIL server.  I realized that I have no idea how to tell if someone used my server to relay through or even if we got spammed (incoming).  What could I look for in the log files that would indicate any suspicious activities?  If someone could give me an example from there log file of what something like this would look like I would appreciate it much.     Thanks in advance,     Kris