On Wed, 5 Jun 2002, Tim Sexton wrote:
> Hello All,
> Just to add some info to the scenario. We have an Exchange 5.5
> server that routes all of it's mail, except local, to the Exim 4.04
> box. I can't use smtp auth to block the relay because of some VPO's
> that live on the Exchange server, that don't have an account. Exim is
> blocking relays just fine, however, because of the relay_from_hosts =
> "name of exchange server", everyone can relay off our Exchange server
> through the Exim server. Any ideas how I might be able use Exim to
> relay only mail that comes from a valid mail account in our domain?
> Thanks for all of the help.
> Tim Sexton
Tell the Exchange server not to relay. If it cant or wont, put a
router-level block on connections to its port 25 from outside your
network.
>
>
> > I would like to set up Exim to verify that all senders come from
> our
> > domain, and refuse the relay if they don't. Is there a way to make it
>
> > verify the that the sender's address is *younglife.org? I have read
> the
> > docs, but still can't figure out how to make it reject a relay based
> on
> > a sender address not meeting a spec.
>
> Which version of Exim are you using? What have you got for a start?
> The sample config file distributed with Exim is a useful starting point.
>
> Greg
>
>
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>
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>
>
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