We have setup a email address at outlook.com (NOT office365!) and try to catch the mail with IMAP(S). In order to make sure that there are no firewall problems I also installes Thunderbird to check if mail is available, and in Thunderbird there is no problem with the exact same setup.

When I hit the Save button in SDP I receive this error:

FAILURE :E-mail settings saved successfully. But error occurred while trying to check connection with mail server - Problem connecting to mailbox

What goes wrong here?