[Mimedefang] Mimedefang 2.36 and how to drop a blocked attachment message - action_bounce?

Les Mikesell les at futuresource.com
Mon Sep 29 18:19:02 EDT 2003


On Mon, 2003-09-29 at 14:58, Kenneth Porter wrote:

> > The relays don't have to be open, they are there for the PCs
> > in that organization. It would be great if they all ran
> > MimeDefang and a virus scanner.  They don't.  It would also be great
> > if everyone stopped running virus-prone operating systems and mail
> > programs, but that isn't going to happen soon either.  So, when you
> > issue the smtp reject there is a pretty good chance you are forcing
> > the connected machine to generate a bounce, and if it is a virus the
> > bounce will almost certainly go to an innocent bystander.
> 
> The problem in this scenario is that the MTA is not tracking where the message
> came from, and sends the bounce to the envelope sender, not the original relay
> (ie. the originating client PC). Are there any MTA's that correctly bounce to
> the original relay?

Correctly?  Mail doesn't have to be symmetrical and there is no
way to get back to the originating client pc other than take
it's word for the mailbox it will check later.  I suppose there
are ways, but none dictated by email standards.

---
   Les Mikesell
    les at futuresource.com




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