[Exim] Archive outgoing mails base on receiver's domain

I plan to archive outgoing mail base on receiver's domain. Let say, if an user
abc@???
send mail out to anyone in xyz.com, I would like to have a copy to a folder (Any
mails going out to domain
xyz.com archive it to a folder.) Is there such a way, please instruct me.
I have been searching mail archive in exim.com, but haven't getting helpful
information.

Thanks.