RE: [Exim] Mail hub configuration

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> -----Original Message-----
> From: Philip Hazel [mailto:ph10@cus.cam.ac.uk]

> On Tue, 17 Dec 2002, Kostur, Andre wrote:
>
> > Let's assume that I have a site where I'm using Exim as a
> mail hub (all MXes
> > point to it), and it may then forward incoming emails to
> other hosts which
> > will be the final destinations. How can I have Exim reject
> emails (as a 5xx
> > error response to the RCPT TO command, I want the sender to
> carry the burden
> > of creating a bounce message) to unknown email addresses?
> Note that Exim
> > itself doesn't have knowledge of the usernames, so I'm
> guessing that one
> > would have to write some sort of router which will go ask the final
> > destination about that email address.
>
> As long as you are using Exim 4, you can do this kind of check using
> callouts on recipient verifications in the ACL.

Unfortunately it's Exim 3.35..... (Debian Stable....)
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