On Tue, Sep 16, 2008 at 09:56:57PM +0200, Henrik Friedrichsen wrote:

> > It is anti-spoofing control, and what you are looking for is two features
> > that Postfix local submission lacks:

Did you see the word "lacks"?

> > 
> >     1. Only allow *trusted* users to specify the message envelope sender
> >        addresses. All other users of sendmail(1) (really postdrop(1))
> >        get [EMAIL PROTECTED] as the envelope sender address (subject to
> >        further rewriting).
> > 
> >     2. Only allow *trusted* users to specify the (Resent-)From: header
> >        and for untrusted users, synthesize the (Resent-)From: header
> >        from <[EMAIL PROTECTED]> and Gecos data.
>
> How do I set that rule?

Write new code that implements the above features, and set the
corresponding new configuration variables. :-(

> > These features are not in Postfix. Also not in Postix is control of
> > the "From:" header for SASL authenticated SMTP users. Only the envelope
> > sender is optionally restricted with smtpd_sender_login_maps.
>
> The users are not SASL authenticated..

Yes, of course, local submission is authenticated by "login" and the
kernel remembering the user's uid, and the password file providing
inverse mappings.

-- 
        Viktor.

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