On Monday 14 April 2008 22:28:58 Bob Proulx wrote:
> Martin Gregorie wrote:
> > Arvid Ephraim Picciani wrote:
> > > I'd like to discuss if returning a mail that went through a
> > > mailing list, back to the sender can be described as backscatter.
> > > I sent the postmaster a mail becouse they filter mails that
> > > contains specific words and send a bounce to the sender. Now i'm
> > > preparing to dicuss this with him/her and would like to hear your
> > > opinion.

> >
> > I would say not.

> I would say yes but it depends. I also consider backscatter any of
> those many misconfigured virus scanners that detect a virus and then
> send a notification to the From: address on the message. (They
> detected a virus, knew that viruses forge addresses, then sent a
> message to the probably forged from address? That is very bad.)
> If the mailing list is scanning for particular words and generating a
> message back to the From: address upon a hit on particular words then
> it would certainly be possible to provoke such a system into
> generating backscatter. If I were to forge your email address and
> include these forbidden words and send it to the list software and
> that list software were to throw notifications back to an uninvolved
> third party who just happened to have their address forged on the
> "From:" address of the mail then to that third part they are getting
> back-scatter spam as part of a joe-job attack.
> On the other hand if the from address is generally trusted and this is
> a valid notification that your mail that you sent isn't getting
> through because of content filtering then I would not consider that
> backscatter. That would just be normal useful notification.

na. its not the ML itself but somone _on_ the ML.

best regards/Mit freundlichen Gr=FC=DFen
Arvid Ephraim Picciani