[exim] Routing instead of smarthost

Hi!

I'm running exim 4.92-8+deb10u6 on Debian version 10.11
Default configuration "smart_host"

Unfortunately, with more and more restrictions in mailing systems I need
to address every emails to appropriate smtp server, not one "smart
host".

I do not have enough practice, on some forum I have got a suggestion to
build/setup different "routs".

Could I do that? - sending emails of different domains to appropriate
smtp server?

Is there any useful example for this?

Regards
tovis