On 17 Jan 2007 at 17:25, Les Mikesell wrote: > > > > You'll notice that neither of these is "bounce it". > > > > In a practical sense, it is. If the other end of the SMTP conversation > is an RFC-conforming server, your 5xx rejection forces it to construct > a bounce.
Yes, but unlike the "end-point server" creating a bounce, the "sending server" has a much higher chance of not creating backscatter. Basically, when it hits *my* server, all I really know is the "MAIL FROM:" that was sent to me, and I have no way of knowing if that is accurate. But, if the other end is a legitimate server, it *should* have screened its input to make sure that it was, so my rejecting at SMTP time means that the real original sender *should* get the bounce, and not some random victim of a joe job. I know this assumes that the original server is not an open relay, etc., but doing other administrator's jobs is not really something I need to worry about. -- Jeff Rife | | http://www.nabs.net/Cartoons/OverTheHedge/ToDo.gif _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list MIMEDefang@lists.roaringpenguin.com http://lists.roaringpenguin.com/mailman/listinfo/mimedefang