Spam Filtering for UW Exchange Online

The best way to block spam in UW Exchange Online is to turn off junk email handling in both Outlook and Outlook Web App (OWA), and then create a filtering rule in OWA. Use the following procedures to set up spam filtering:

Turn Off Junk Mail Filtering in Outlook

  1. While viewing Mail, on the Home tab, in the Delete group, click Junk, and then click Junk E-mail Options.
    If you are not in Cached mode, Outlook displays a message that the Junk E-mail filter is not available. It is fine that it is not available, because you will not be using it, so click OK to continue.
  2. In the Options tab, select No Automatic Filtering.
  3. In the Safe Senders tab, make sure that the list is empty.
  4. In the Blocked Senders tab, make sure that the list is empty.
  5. In the International tab, click each button, click Clear All, and then click OK.
  6. Click OK.

Turn Off Junk Mail Filtering in OWA

  1. Open OWA.
  2. In the upper-right corner of the screen, click the gear icon  Gear icon, and then click Options.
  3. On the left side of the screen, click block or allow.
  4. Select Don't move email to my Junk Email folder.

     
    block or allow

  5. Click save.

Create a Filtering Rule in OWA

  1. In OWA, on the left side of the screen, click organize email.
  2. Click the plus sign (+), and then click Create a new rule for arriving messages.

     
    Create new rule

  3. In the new inbox rule dialog box, enter a name for this new rule, such as Spam Filtering, and then click More options.

     
    More options

  4. From the list under When the message arrives, and: point to It includes these words, and then click in the message header.

     
    Include these words

  5. When prompted to specify words of phrases, enter:

    X-Uwash-Spam: Gauge=XXXXXX

     
    specify-words-enter-6

  6. Click the plus sign ( + ), and then click OK.

     
    Click plus, then OK

  7. In the new inbox rule dialog box, from the list under Do the following, point to Move, copy or delete, point to Move the message to folder, and then click Junk E-mail.

     
    Junk E-Mail folder

  8. Click OK.
  9. Make sure that the Stop processing more rules box is checked.
  10. Click Save.
  11. If the following message appears, click OK to continue:

     
    Warning

More information about the rule

  • The rule will apply a threshold of "60" for spam rejection, messages scoring 60 or more will be moved to Junk. To change the threshold, add or subtract X's from the string.
  • The higher the threshold the less likely you are to move messages to Junk that you might really want, and, conversely, the more likely you are to see "junk" messages in your Inbox.
  • No filter is perfect. Regularly check your Junk mail folder for legitimate mail.

Don't Accidentally Re-enable Junk Email Filtering in Outlook

Do not right-click any message and select Junk or any of its options. Doing so re-enables junk email filtering in Outlook.

Last modified: September 15, 2014