On Thu, Apr 17, 2008 at 01:31:49PM -0400, Ugo Bellavance wrote: > >There is NO way to prevent people from forging your name to the From: line > >on an e-mail message. > > False. No, it's true. There is no way to prevent people from forging the From: header. > SPF can help. DomainKeys can help. These things help detect forgeries after the fact, but they don't do anything to prevent forgeries in the From: line. They aren't designed for that purpose. > Some other mechanisms like > watermarking in MailScanner, and there is also something called EMEW in > BarricadeMX (http://www.fsl.com/barricademx.html). There might be other > means, I only know those. > > For SPF and DomainKeys, it depends on the proportion of mail servers > that check them. > > For the 2 others, it assumes that all of your outgoing mail is going > through the MailScanner/BarricadeMX system(s) A forged email can come from any server in the world. Best Regards Kent -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
