Fernando Maior:
> Hello Alfredo,
>
> I would do that if I would not like my users to know they are being
> tracked... I just looked at the docs and see nothing that can help
> you doing that.
>
> If you mean to have the second server only for the always_bcc
> account, you may change the postfix code in order to not send
> bounce messages and install it in the second server. Not easy
> task, sure...
>
> May be you should look at the source for bounce service daemon.
Or look for Victor's description of a mail stream duplicator. The
purpose was to archive all mail. It was implemented (I think with
Net::SMTP) as a content filter that duplicated all input lines to
a secondary stream for archival. The trick was to send the final
"." to the primary stream only after delivery to the secondary
stream was successful, otherwise it would report a temporary error.
Such a content filter might even be deployed as smtpd_proxy_filter;
it should not be more than a few dozen lines of code.
Wietse
