[EXIM] local delivery precision

Hi,
can I configure to deliver ONLY to users defined in the alias-file?

The problem: 
If I have for example three local users in /etc/passwd: "jim, bob, mary" 
and handle two domains, I want that bob has only the address bob@domain1 
and not bob@domain2. By default he has bob@domain1 and bob@domain2.
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M a r k   S e u f f e r t                             captain@???
Pirates Communication                              http://www.pirate.de

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