[Exim] Sending Mail to multiple locations

Hello...

I am not sure I am conceptualizing how Exim delivers mail quite right. What
I want to do is have it get an email by SMTP, see where it is addressed,
check some sort of database or text file (MySQL if I can make it work), and
send off copies of the message to all the people set to receive that
message.

For example, I would like to somehow configure that any message sent to
"user@???" is saved in a local spool file (such as
/var/mail/domain1.com/user) and forwarded to pager@???.

Can somebody show me, in general, how Exim is setup to handle this? I don't
need an exact configuration file or anything, just a good shove in the right
direction.

Thanks

Trevor Sky Garside
trevor@???