Does anyone have any good ideas how to monitor your MN? enabling sendmail in the VPS and opening ports is one option, but probably not a very good one.
Ping works, but thats no guarantee darkcoind is actually running..
You do not need to open any port for outbound mail.
I have it locked down via csf so it only allows traffic (in/out) on port 9999, and ssh open from 2 wan adresses, my home connection and my workplace..
So i guess it would be ok to open one outbound port to enable sendmail.. any other opinions / suggestions?