[Exim] delivery a domain on 2 hosts

Sorry to ask again but i can't solve at this time my little
problem to configure exim for dual delivery.

I've read Exim Manual and i've running some testing
setup without success.
( driver = domainlist )

Please can tell me the best way to delivery my.domain
to mail1.my.domain and mail2.my.domain

i've also testing a rewriting rules with no chance :-(

Many thanks per advance for support

Tony