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[FW-1] how to trace Spam back to origin



If this is the wrong place to ask sorry but I figure its a good place to
start.

I have received an email saying that some ually explicit Spam email
originated on our network.
I have all the headers and the IP in question is the external interface of
one of our routers in the UK.
I don't think this can be correct and I am guessing the IP was spoofed. Is
there anyway to trace all the machines back and prove this?
Regards
Paul

--------------------------------------------------------------------------------------------

C. Paul Simons
Corporate IT Security Architect
IHS Energy Group, Englewood, CO.

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