m...@ruggedinbox.com:
> > By default, Postfix REMOVES Return-Path headers from email messages.
> > The default setting is:
> >
> > message_drop_headers = bcc, content-length, resent-bcc, return-path
That is the default setting.
> We tried to use the 'message_drop_headers' parameter in both main.cf and
> master.cf (under the 'cleanup' line) but always get the error:
There is no need to seet this. It is the default.
> [....] Reloading Postfix configuration.../usr/sbin/postconf: warning:
> /etc/postfix/master.cf: unused parameter:
> message_drop_headers=bcc,content-length,resent-bcc,return-path
>
> can we have a working example of how to use it ?
You don't need to set this. It is the default.
> Finally we tried to comment the line in main.cf which calls our custom
> script
> and the return-path is correct:
>
> Return-Path: <m...@ruggedinbox.com>
>
> so it looks like the problem is around the script or its invocation.
OK, so you know the mistake is outside Postfix.
Wietse
