Re: real lesson
But it is his domain. (see the screenshot) He's been paying for it for years according to whois.
He's employing MS to manage his email which for the vast majority of small companies is the only rational choice. Even if you are big enough to have an IT team managing a mail server, especially with a legal firms retention requirments is an expensive pain.
Fortunately I've never had to deal with the O365 support org but if they are anything like the Azure org I wish him luck. I've only once ever managed to break through to a real MS staffer, and then it took 8 weeks. And at that point they confirmed what I had discovered empirically 6 weeks before (for backups of SQL databases using Azure Recovery Service Vaults an IOP is 8MB and so those 5000 IOPs for the premium disk hit the bandwidth limit of the machine at less than 100 IOPs) about 5 seconds after I re-iterated the issue for the umpteenth time.