eM Client random Microsoft Acct Server connection problems

Lately i have been randomly getting connection problems to Microsoft IMAP mail servers with my Outlook, Hotmail and Live accounts using the the default “imap-mail.outlook.com” server address.

So changed all my Microsoft accounts to the server IMAP mail address “outlook.office365.com” and seems to be fine now. So i suspect the default address might be eg: overloaded some of the time.