[Exim] Rbl checking only for incoming messages

Hello everyone,
I am using rbl checking on Exim 4 right now but it seems to check incoming
and outgoing message which is annoying if you check for dynablocks.
Is there a way to restrict the rbl checking only for incoming smtp traffic?

This is what I have right now as part of my ACLs:

require verify = sender

deny message = $sender_host_address is listed \
at $dnslist_domain
dnslists = list.dsbl.org : \
sbl.spamhaus.org : \
bl.spamcop.net : \
relays.ordb.org : \
korea.services.net : \
china.blackholes.us : \
russia.blackholes.us
deny local_parts = ^.*[@%!/|]
message = I've never seen @, %, !, /, or | in an e-mail. Neither should you.