Thomas, Ralf,

Thanks for your quick (<5 min.) responses :-)

> You can use the standard firewall setup (as described in the faq) and only
> add the backbone SMTP servers to $mynetworks. That way other internal
> clients are handled just like any other internet host (which means it
> doesn't relay mail to other destinations)

The problem with only putting the SMTP servers into $mynetworks is that the
other internal
hosts can still use the gateway for delivering mail to the intranet (albeit
the anti-relyaing stuff makes sure they cannot send to the Internet).

Frank

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