Hi - understood. Now, as the messages are received from other hosts, I can't change the MAIL FROM part of the conversation. Also, as they are sent from .net (using system.net.mail) the sender application can't change the envelope sender without changing the From: line too (it's a limitation of that class). The alternatives now are to 1. not use system.net.mail, and write another smtp class in .net 2. somehow make postfix insert a header that makes other mailer-daemons bounce NDRs/out-of-offices/etc to it, instead of the From: address. #1 is far from trivial for various reasons, so any hints towards #2 would be very helpful
On Fri, May 28, 2010 at 2:26 AM, Wietse Venema <wie...@porcupine.org> wrote: > Razvan Cosma: > > /^Return-Path: (.*)/ REPLACE X-Original-Return-Path: $1 > > /^X-bounces-to: (.*)/ REPLACE Return-Path: $1 > > The Return-Path: header DOES NOT CONTROL delivery of bounce messages. > > Instead, bounce messages are sent to the envelope sender address > (the address in the MAIL FROM command). > > Wietse >
