NDUS Recipients External Recipients NDUS Recipients From the received email, click on the link. Log in using your NDUS.identifier and password. Authenticate your account with Duo MFA. Learn about Duo MFA. The message and attached files will show in the browser. External Recipients From the received email, click on the link. Enter the email address the file was sent to. Check your email for the validation code. You can either click the email link or enter the validation code. The Private Message and files will appear in your browser. Info! If you've forgotten, and cannot reset your password with your recovery email, the UIT Service Center can reset your account password for you. Simply call us at 701.777.2222 any time, or start a live chat during normal business hours.