"Frank" == Frank Ellermann <nobody(_at_)xyzzy(_dot_)claranet(_dot_)de>
writes:
Frank> As soon as some big providers implement SPF (e.g. using
Frank> SpamAssassin 3.x) the spammers will stop to forge @xyzzy,
Frank> because they want to reach all of their unhappy
Frank> "customers".
The smart spammers will. Though whether there will still be enough
dumb spammers out to cause lots of backscatter is less clear to me.
-roy