On Wed, Dec 3, 2014 at 12:28 PM, Wietse Venema <wie...@porcupine.org> wrote: > Jose Borges Ferreira: >> Hi, >> >> I'm looking deeper into bounce handling in Postfix and cam across 2 issues: >> >> 1) The default From: header, "MAILER-DAEMON (Mail Delivery System)", >> is not RFC valid. > > YOU create a non-compliant configuration when YOU disable > append_at_myorigin for local submission.
Thanks for pointing out where the problem is. I have to maintain a quite complex setup and this was already set. Next time will also test on a Postfix instance with minimal changes. >> 2) I want to forward bounces to a specific host. I was looking for a >> way to specify a relayhost or a transport for that class of messages >> and couldn't find a way to achieve that. > > There is no RFC that requires this. I am highly-suspicious when > people want to handle NDRs differently; they usually have a problem > that they want to cover up. > The RFC reference was for 1). This is more about policy than anything else. This is the scenario. Box 1 : just receive email from "outside" - inbound flow. Box 2 : used to sent email to the "outside" - oubound flow. Firewalls are set in a way that don't allow Box 1 to send traffic to the "outside", so i need to route bounces (and defers) generated in Box 1 to Box 2. José Borges Ferreira
