Nohooo, it cannot be found, as I said in
http://www.experts-exchange.com//Q_26302432.html and as Leo confirms. On a standard Domino server, where mail journalling or transaction logging are not enabled, there is a trace of 7 days of information about when and where mails were sent to or received from. That is all. And if you really want the additional information when it is available, you nee a court order or so to get it.
It can even be an internal IP-address, handed out by a DHCP server, so tracing back to the originating PC might not even be possible.
Can you please explain why you want to find that IP-address??