On Mon, Aug 25, 2008 at 08:54:40AM CEST, Magnus Bäck <[EMAIL PROTECTED]> said: > On Mon, August 25, 2008 8:32 am, Stefan Palme said: > > > this is a question not exactly postfix related: When a mail server > > is about to send a bounce message to the original sender of an > > undeliverable mail - which address will this bounce be sent to? > > > > The Return-Path? The address from the "From" header? > > Or even to the "Reply-To" address? > > Bounces are always sent to the envelope sender address. That address is > also added as the Return-Path header by the MTA upon final delivery (i.e. > you won't find the Return-Path header on the wire and you can't use that > header to affect where bounces go).
If I recall correctly there used to be a "Mail-Error-To" header, but I doubt it was ever a standard header. -- Erwan
