[Exim] prohibit relaying

In exim 3 I used

relay_domains =        mysql;MYSQL_REL_DOMAIN

host_accept_relay =    LOCAL_DOMAINS : \
                       mysql;MYSQL_REL_IP : \
                       mysql;MYSQL_REL_HOST

sender_address_relay = LOCAL_DOMAINS : \
                       mysql;MYSQL_REL_IP : \
                       mysql;MYSQL_REL_NET

relay_match_host_or_sender = yes

to check who is allowed to send over my mailserver.

Whats about exim 4 with acl or routers?
I do not know where to start with permit relaying.

Can someone show me the direction.

I hope so.

Karl-Heinz