Legitimate messages may appear in the Quarantine if the sender was accidentally placed on your Blocked Senders list. You can manage your safe or blocked senders list by following the instructions below.
Manage Your Safe or Blocked Senders List
Log in to your Outlook Web Account and login with your university email address and password.
Click on the Settings icon in the top right corner of the screen
Select Mail, then Junk Email
From this menu you can search, add, and delete email addresses from your Safe Senders list. Note: The quarantine system will only use email addresses and not domains from your Safe Senders list. It's also recommended to review your Blocked Senders list regularly to ensure that no legitimate emails are being blocked.
For more information about blocked senders, please visit the Microsoft website.