help.mail.colostate.edu logo

CSU Logo - click to visit the CSU homepage


Self-Service: Release Messages from Quarantine

Spam filtering in Office 365 is configured to quarantine e-mail considered to be "high confidence spam" - i.e. e-mail that receives a score of 9 out 9 in Exchange Online Protection. Users can view and release quarantined e-mail using the the self-service option available in Office 365 and documented below.

Access Office 365 Quarantine and Release Quarantined Messages

  1. Login to https://admin.protection.outlook.com/quarantine using your eID in the format of "ename@colostate.edu" along with your eID password.
  2. Find and select the message you want to release from quarantine.
  3. Click on the envelope icon to release the message.
  4. Click "Yes" on the warning message asking you to confirm that you want to release the message.
  5. Do not close the window until you receive confirmation.
  6. The previously-quarantined message should arrive in your Inbox.

Add as a Safe Sender

Optionally, users may want to add a sender or sender domain to their Safe Senders list in Office 365 to ensure e-mails from the sender are not quarantined. Steps to add Safe Senders are provided below.

  1. Login to the O365 Portal at https://portal.office.com. Enter your username as "ename@colostate.edu" when logging in.
  2. Access the "Mail" section of the portal by clicking the "waffle" icon in the upper left corner and clicking the "Mail" tile.
  3. Click the "Gear" icon in the upper-right. From under the "My app settings" section, click "Mail."
  4. On the left, click "Block or Allow" under the "Accounts" heading.
  5. Enter the email address to add to your safe sender list (e.g. emailaddressexample@domain.com) in the "Safe sender and Recipients" section. Click the + icon to add the sender to the list. (see note below)
  6. Click "Save" in the upper left to save the changes to your Blocked or Allowed Senders list.

Note: Safe Sender lists are limited to 1000 entries and must be specified as full e-mail addresses because adding Safe Sending domains is not supported. Blocked Sender lists are limited to 500 entries, which can be full email addresses and/or email domains.