Neohapsis is currently accepting applications for employment. For more information, please visit our website www.neohapsis.com or email firstname.lastname@example.org
From: Steve (steve.hilldigitalcertainty.co.uk)
Date: Mon Jun 29 2009 - 12:41:28 CDT
On Mon, 2009-06-29 at 12:52 -0400, Wietse Venema wrote:
> EASY steve.hilldigitalcertainty.co.uk:
> > On Mon, 2009-06-29 at 11:32 -0400, Wietse Venema wrote:
> > > EASY steve.hilldigitalcertainty.co.uk:
> > > > Appreciate that - but to do this defeats the object of rejecting mail at
> > > > SMTP time (to avoid the bounce in the first place). What appears to
> > > > happening is the spambot sending the mail does not hang around for the
> > > > 250 OK at the end of the <lf>.<lf>. If it did, it would have been SMTP
> > > > rejected. (no bounce ever needed).
> > >
> > > As delivered, Postfix does not send a bounce email message when it
> > > can't give the bad news directly to the remote SMTP client.
> > >
> > > If your Postfix does, then you have a non-obvious configuration,
> > > and sharing that may help to un-confuse the discussion.
> > >
> > > Wietse
> > It looks very much like clampsmtp was giving the 250. I've disabled it
> > and so far this afternoon it's CNR. I'll look to reconfigure what I'm
> > doing with clam. Basically the clam content filter has OK'd it but the
> > upstream spam milter rejected it.
> > All that to one side, is there any way to stop the generation of NDR's
> > period - or to have them 'redirected' to a local target? I do appreciate
> > this is a sensitive subject, but I would rather have the option not to
> > generate them in the first place.
> Steve, you know the answer to this question: I will repeat it once
> more time. Don't reject mail after accepting it.
You are, of course, correct. It would be totally retarded to be able to
switch of bounce/ndr messages. Mail admins are totally perfect and never
make any config errors that would have the potential to turn Postfix
into a bulk backscatter machine. I apologise for asking for such a
stupid feature. I'll try and become perfect so I don't show up any
limitations to your Postfix in the future.
I also apologise for asking for the ability to white list clients,
senders or recipients in the header and body check section. That is also
totally retarded of me and I will ask all spammers to be considerate and
send me 'the right kind of spam'. :-)