Strangely indeed

"Strangely - less often than not being able to connect to Exchange or devices on our internal network because of shonky software, badly configured (or administered) hardware or even someone forgot to turn the server back on after a power cut (we're in a rural location, it happens)."

Then I'd say you're not a serious business -- or at least not a business with a serious IT department. All of the issues you described would have been fixed by an IT professional with a respectable budget in their first month on the job.