On Fri, 2009-02-13 at 12:20 -0600, Lindsay Haisley wrote: > On Fri, 2009-02-13 at 17:43 +0000, Martin Gregorie wrote: > > I've heard it said that IPV6 will... > You can always spoof an IP address of any type. The only email header > you can trust absolutely is the topmost Received header in an email. > This address can't be spoofed.
Never say never or always, since never will always get you in trouble... > If it were, it would have been > technically impossible to send the email. It might be hard to spoof, but not impossible if you are able to intercept the data path somewhere along the way. Otherwise, there would be no reason to block bogons... -- Daniel J McDonald, CCIE #2495, CISSP #78281, CNX Austin Energy http://www.austinenergy.com
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