[EXIM] domain-aliasing

what would be the easiest way to do a domainaliasing within exim?

i imagine a file /etc/domainalias that looks like this:
domain1 domain2

when domain1 is the domain the mail is addressed to and domain2 ist the
domain it is delivered to.

Thank you
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andreas gietl
dedicated server systems
fon +49 9402 2551
fax +49 9402 2604
mobile +49 171 60 70 008
gietl@???

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