+ tls_certificate = DIR/aux-fixed/exim-ca/example.org/server2.example.org/server2.example.org.pem
+ tls_privatekey = DIR/aux-fixed/exim-ca/example.org/server2.example.org/server2.example.org.unlocked.key
+ tls_verify_certificates = DIR/aux-fixed/exim-ca/example.com/server1.example.com/ca_chain.pem