[Exim] delivering a mail twice

Hi .*,

I've tried searching the docs, the FAQ, and the mailinglist archives for
this, but no success.

I've been asked to deliver all mail to a local domain to one mailbox
(let's call that mailbox 'archive' here), in addition to the 'real' final
recipient of the mail. Is there an easy way to achieve this using exim?

Please Cc me any replies. TIA.

--
Regards,

Wouter Verhelst
Template -Hardware Division-