Stefan Palme:
> On Fri, 2008-09-05 at 06:52 -0400, Wietse Venema wrote:
> > Stefan Palme:
> > > Hi all,
> > >
> > > Our mail server is configured to use special envelope sender addresses
> > > for some outgoing mail so that bounces can be processed automatically.
> > >
> > > The "bounce processor" is a self-made script. Are there any hints what
> > > to look for in a bounced mail to be sure, that it really is a bounce
> > > caused by "undeliverable mail" (and not only a vacation message), and
> > > how to clearly detect the email address that bounced? My goal is to
> > > collect invalid email addresses, but not email addresses that only send
> > > a vacation message or other auto-reply-stuff.
> >
> > Use an envelope sender address that does not appear in From: or reply-To:.
>
> I do. But not only "real bounces" are sent back to the envelope sender
> address, but vacation-auto-replies too. See thread with subject
> "where to send auto-replies?".
Bounce messages are defined in RFC 3462/3464, and have Content-Type:
multipart/report; report-type=delivery-status.
Mail software that produces its own home-grown format requires that
you maintain an increasingly complex tangle of regular expressions.
Wietse
