man, 22.08.2005 kl. 17.01 skrev Jochen Seifarth:

[...]

> >
> > This is a bad idea.  When the second postfix REJECTs mail, the first
> > postfix will have no choice but to generate a bounce to the envelope
> > sender.  Your server will be sending bounces to innocent third
> > parties (called backscatter - you'll get blacklisted for this) and
> > your queue will be clogged with undeliverable bounces, slowing everything
> > down.
> >
> > Once you have accepted mail from the internet, your only reasonable
> > options are to deliver as is, tag & deliver, or discard it.

[...]

> Not quite ;-)
> 
> This is a BEFORE-QUEUE filter where the first SMTPD and AMaViS act as
> proxies (and not content_filter as you would have in an AFTER-QUEUE
> filter).
> The first SMTPD will only accept the email when the second SMPTD has
> accepted it, otherwise the first SMPTD will reject the email from the
> originating MTA with the REJECT response that is has received from the
> second SMTPD. There is no bouncing to envelope-sender addresses involved
> at all.

I have the same setup too, but only because my rigs are low-volume rigs.
In fact, my test rig has:

postfix -> amavisd-new -> postfix -> dspam (daemon) -> postfix and the
first smtpd listener halts everything, until the last smtpd listener has
given an ok or smtp reject, which the client receives. One of the many
reasons I'm glad I left Exim for Postfix.

--Tonni

-- 
To Liza Picquard (?), by Phil Williams on BBC Radio 5, Wed. 10th Aug.
2005, 15:59 CEST:

"What is your definition of 'poor'?"
"Well, if your only occupation is collecting dog turds for a living,
you're pretty poor ..."

mail: [EMAIL PROTECTED]
http://www.billy.demon.nl



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