postfix.service - SubState is "exited", but supposed to be "['running']"
postfix.service just calls /bin/true. instead, there is a postfix@-.service - Postfix Mail Transport Agent (instance -) service running - not sure if we can automatically monitor that
postfix.servicejust calls/bin/true. instead, there is apostfix@-.service - Postfix Mail Transport Agent (instance -)service running - not sure if we can automatically monitor that