-tls_certificate = DIR/aux-fixed/exim-ca/example.com/server1.example.com/server1.example.com.pem
-tls_privatekey = DIR/aux-fixed/exim-ca/example.com/server1.example.com/server1.example.com.unlocked.key
+.ifdef ORDER
+tls_require_ciphers = ORDER
+.endif
+
+CA = DIR/aux-fixed/exim-ca
+DRSA = CA/example.com
+DECDSA = CA/example_ec.com
+
+tls_certificate = DRSA/server1.example.com/server1.example.com.pem \
+ : DECDSA/server1.example_ec.com/server1.example_ec.com.pem
+tls_privatekey = DRSA/server1.example.com/server1.example.com.unlocked.key \
+ : DECDSA/server1.example_ec.com/server1.example_ec.com.unlocked.key