??? 250
starttls
??? 220
+noop
+??? 554 Security failure
+quit
+????554 Security failure
+??? 221
+???*
****
### No certificate, certificate optional at TLS time, required by ACL
client-ssl 127.0.0.1 PORT_D
??? 250
starttls
??? 220
+noop
+??? 554 Security failure
****
### Bad certificate, certificate optional at TLS time, reject at ACL time
client-ssl 127.0.0.1 PORT_D aux-fixed/exim-ca/example.net/server1.example.net/server1.example.net.chain.pem aux-fixed/exim-ca/example.net/server1.example.net/server1.example.net.unlocked.key
??? 250
starttls
??? 220
+noop
+??? 554 Security failure
****
### Revoked certificate, certificate optional at TLS time, reject at ACL time
client-ssl 127.0.0.1 PORT_D aux-fixed/exim-ca/example.com/revoked1.example.com/revoked1.example.com.chain.pem aux-fixed/exim-ca/example.com/revoked1.example.com/revoked1.example.com.unlocked.key