[logback-user] SyslogAppender failing silently

I'm trying to setup SyslogAppender to log to a virtual machine that's running rsyslog, and because of a firewall rule on the VM, SyslogAppender wasn't connecting to rsyslog, but I didn't see any errors or warnings from Logback, even after setting a OnConsoleStatusListener. If I change the "syslogHost" parameter to a non-existing name, I get an error message on the console, but the same doesn't happen for a refused connection. I expected to see some sort of notification about this problem. Regards, Daniel Serodio