This is why Windows has a bad rep....
twats like these.
How on earth can you 'delete AD'.....? Surely there could only be a couple of people who have access to the actual database file itself. Are you telling me that they deleted the database from the cluster?!?!? WTF were they thinking!?!?!?!
Alternativley some pissed off employee decided to delete all the objects in the directory... which makes you wonder if they have heard of delegation or do they just give all helpdesk staff domain admin rights....?!
And how the fuck can it take more than a couple of hours to restore the database...? And as for email, all you should need to do is reboot your Exchange cluster once AD is back up and voila.....
Jesus - and companies pay these people millions to look after mission critical IT. You couldn't pay me trust them with a fucking toaster.