The problem below has been fixed.
We apologize for the inconvenience and thank you for your cooperation.
—– October 5, 2021 8:42
Some mailboxes cannot be opened in the WEB version of Sophiamail.
It seems that Microsoft is currently investigating due to a failure of Microsoft’s mail server.
We will inform you as soon as it is restored.
There is no effect on browsing Sophia Bulletin Board, etc., or sending and receiving emails with the client version of Outlook.
We apologize for the inconvenience and thank you for your cooperation.