You need to know your DNS well, you need to know your OS basics well (when's the last time you understood what S.M.A.R.T statistics really mean?), you need to know your monitoring well, you need to know your backups are up to date and functioning. Do you have some sort of alerting set up so you will even know if anything went wrong? Oh your are the collateral damage of a DDOS to the datacenter and the datacenter has disconnected your server, and they sent you a mail about it ? To your mailserver ? You have a few other users, and now they would like to use a webmail system? Let's get to it! Whoa, viruses, let's install amavisd to filter those, let's see where is the documentation? Ah. Just the sourcecode ? Very well!
It's really more of a second job.
But it's ever so much fun once you have a decent grasp on all these things
It's really more of a second job.
But it's ever so much fun once you have a decent grasp on all these things