Mail acct issue
I have 4 email accounts in my iPhone email app. iCloud and gmail work properly. A week ago the msn box stopped loading or sending email. I get no connection error. The email works properly on my pc and outlook app on my iphone. It asks for log in when I try to send email. I enter but does not accept. I added outlook to the app and it loads emails but won’t send with same error message. What can be causing the issue?
iPhone 13 mini, iOS 17