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The problem is existence of SMTP servers that act as an open relay. Anyone with some basic knowledge of the SMTP protocol can format an email that can appear to be from any address they like - header and all. One could easily send an email out as billg @microsoft.com or any other address they choose. All you need is the IP of an open relay, and a telnet connection over port 25.
The better route for tracking down the source is via IP, however with free / open internet access in so many public places you will likely not get to the originating source. Also, anyone doing anything suspect (spamming / phishing / hacking) is likely running their traffic through a random proxy, making IP tracing extremely difficult.
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ßrandon
Last edited by 87coupe; 01-26-2006 at 12:03 PM..
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