On Sat, Nov 24, 2012 at 03:09:59PM -0500, Wietse Venema wrote:

> > > Any help greatly appreciated!  Patrick
> > 
> > Postfix built-in mechanisms to add recipients are "reliable" in the
> > sense that the sender will be informed of delivery errors.
> > 
> > To add a recipient without notification, use an smtpd_proxy_filter
> > that copies command and replies without modification, and that adds
> > the additional recipients as
> > 
> >     RCPT TO:<additional-recipient> NOTIFY=NONE
> > 
> > (this requires Postfix 2.3 or later).
> 
> Plus, it requires that all systems down-stream from Postfix correctly
> implement RFC 3461 (the SMTP DSN extension).

I believe the same properties hold with recipients added via
recipient_bcc_maps (automatic NOTIFY=NEVER up to the last forward-path
MTA that supports DSN). Therefore, it may be simpler to use bcc maps,
rather than implement a proxy filter or similar.

-- 
        Viktor.

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