Greg Owen writes:
 >      Yup.  If you have one qmail box forwarding to a second qmail box
 > which is the mail store, you get this amplification.

No, you don't get any amplification.  You only get amplification if
you can get someone else's machine to expend resources that you
didn't.  Yes, you can get one message to expand into N, but you have
to send those N messages yourself.  The only effect you get by forging 
the envelope sender and using a bouncing envelope recipient is that
the attack comes from many hosts instead of just yours.  But any MTA
will do that, not just email.

-- 
-russ nelson <[EMAIL PROTECTED]>  http://russnelson.com
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