If you’re a co-founder, CEO or simply the boss of the company, everything that sucks about it or that fails is your fault.
Don’t even think of blaming the new guy, the young guy or the guy who left for a week in the Bahamas.
If one does not know what to do, is not qualified or hasn’t documented how to re-configure the message queue system, it’s because you weren’t there to make sure things were OK.
So next time you’re about to send an email to blame someone, forward it to yourself.