For those of us that feel strongly that email should be a reliable transport medium.

Dustin Baer dustin.baer at IHS.COM
Wed Feb 11 18:21:07 GMT 2004

Julian Field wrote:
> At 22:41 10/02/2004, you wrote:
> >Julian Field wrote:
> > >
> > > That will mean the bounce header name will have to be fixed and
> > > non-configurable. Which may be a good thing anyway. Slightly worried that
> > > it opens up an attack route though. Someone could pile in mail containing
> > > the bounce header, and you would quietly delete it. So someone could DoS
> > > your mail servers without you being able to work out why. Not sure I want
> > > to do that.
> > > Thoughts?

Dustin Baer wrote:
> >
> >Rules can be written at the MTA level that can discard on a particular
> >header...with Sendmail, at least.  Might be better to leave it up to the
> >MTA to discard, rather than potentially opening yourself to DoS.
> Very good idea.

Well...maybe not...

> I have tagged all the subject lines in all the spam bounce
> reports, so you can just filter on Subject: which most people can work out
> how to do (either at MTA or MUA level).

It is a rock-and-a-hard-place scenario.  If a receiving admin decides to
spam bounce a legitimate email, and the sending admin had decided to
discard based on header information, then nobody is made aware of

Kudos to you for trying to please everyone!

Dustin Baer
Unix Administrator/Postmaster
Information Handling Services
15 Inverness Way East
Englewood, CO 80112

More information about the MailScanner mailing list