Re: SMTP server mode

From: Patrick Ben Koetter <>
Date: Mon, 20 Aug 2012 15:28:32 +0200

* Todd Lyons <>:
> On Mon, Aug 20, 2012 at 1:08 AM, Patrick Ben Koetter <> wrote:
> > The only downside we run into when we implement SMTP filters lawfully in
> > Germany is we cannot run different policy actions on messages to multiple
> > recipients - its either ACCEPT or REJECT, but not ACCEPT for recipient A and
> > REJECT for recipient b. SMTP was not made to allow something like that. Claus
> > Assmann came up with a SMTP command to allow that, but to my knowledge if
> > hasn't become a standard. <- HINT for msk. ;)
> Yes, PRDR does seem like the ideal solution for this. Claus has had
> it coded into his mail server software for years now. I've been
> working, albeit very slowly, on adding it to exim. Murray has told me
> in the past that getting it moving towards an RFC status is helped
> greatly if there are working implementations, so I'm trying to provide
> him with a second implementation to demonstrate interoperability.
> It's hampered by my lack of c fu, but I have people I can bug for help
> when I get stuck. It's just very very slow progress, conflicting with
> work and family for time to work on it.

There had been some discussion about implementing PRDR on the postfix-devel
list, but I think it stalled after a while. I'll try to get an update on this.


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Received on Mon Aug 20 2012 - 13:28:49 PST

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