> My business email system still does not work.

This is always the weird things in those rants. He's complaining that after 4 days his mails are offline.

Now I'm doing a mix of physical servers in rented rackspace, and rented servers - but even there I can have billing mixups where they deactivate servers for no good reason. And to get email working again the limiting factor would be the DNS TTL - new servers would be online somewhere else within hours of it going down. (And yes, I tested that just last year - one hoster threatened cutoff due to non-payment on a paid invoice, which prompted me to move the mail server just in case while getting this resolved).