Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi. I'm Brian and I'll try to help.
I looked into the correct settings for Xplornet and they are not what you're using. You should be using encryption for the connections to the server. You should allow Outlook to automatically configure the account instead of doing it manually, but it that doesn't work, see this guidance from Xplornet: https://www.xplore.ca/documents/Windows10MobileOutlookMail_ChangeSettings_English202106.pdf