No, you can't automatically forward your email to another email address.
The university wants to ensure that communication with you as a student works and that important e-mail does not disappear along the way. For a long time, automatic forwarding of emails to external providers such as Yahoo mail, Gmail, Hotmail and other universities has been unreliable.
You must use the university's email system to access your student email (https://office.du.se). You can also use the Outlook application, or any other tool you prefer.
Add your account to Outlook
Here's how to add your account to Outlook: Add an extra email account to Outlook - faq.du.se