[exim] exim4 version 4.69 - only permit message relay if target email address is in /etc/aliases or in user .forward ?

Autor: Mike Gore
Data:
Para: exim-users
Asunto: [exim] exim4 version 4.69 - only permit message relay if target email address is in /etc/aliases or in user .forward ?

Question: I would like to setup exim4 to only permit relaying if
resulting email address in defined ether in /etc/aliases or by a users
.forward file, otherwise I would like to keep my relay domains blank.
Does anyone have an example of this configuration ? The key is I
would like to do this safely.

I am surprised its not in an FAQ since using system aliases and
.forwards are common.

I am Using Ubuntu 9.10 and exim4 version 4.69.
Thanks

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# Mike Gore, Technical Support, CSCF
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