We are exploring ways to get the current mail server working, before giving up and starting an all-new server, because we know that a week of downtime is far from ideal. External mail servers are connecting to our mail server, but our mail server is immediately shutting down the connection, meaning the external mail server cannot deliver its message.
Our mail server is working, but it’s basically as good as the computer on your desktop right now, which is not very good at processing email because it’s not configured to.
Some clients have taken matters into their own hands, which is to be expected, and we have always consciously given you that ability: You have access to the DNS for your domain, which means you can point the DNS for your domain to another mail server. If what is happening right now is not to your liking, understandably, you can do this. We don’t have the time right now to go looking for and provide auth codes so that you can rush off and do the wrong thing.
Speaking of which, the current situation has absolutely no effect on any websites we host, also by design.