Creating Inbox Rules

These instructions show how to add server-side rules to IMSS Exchange email so that messages suspected as SPAM are automatically moved to your Junk E-mail folder. This should reduce the amount of SPAM delivered to your inbox.

As a reminder, you should regularly check your Junk mailbox for messages that may have been incorrectly tagged as Spam. While we do our best to ensure that legitimate messages arrive in your Inbox, increases in malware have resulted in the likelihood of more valid messages ending up in Junk.

  1. While logged into IMSS Exchange OWA (Outlook on the web at https://outlook.caltech.edu), click on the Options tab at the top right of the page and then click on Create an Inbox Rule.

     
  2. In the Organize E-Mail > Inbox Rules screen, click on New... to add a new rule. Select the option to Create a new rule for arriving messages...

     
  3. Click on More Options...

     
  4. Select the condition for When the message arrives to “It includes these words in the message header…” 

     
  5. Specify the following phrase by entering the following “X-Spam-Status: YES”. Click the PLUS to add. 

     
  6. The phrase should now be saved. Click OK

     
  7. Then select the associate action. Choose “Move, copy, or delete > Move the message to folder…” 

     
  8. Select the folder “Junk E-mail”. Click OK

     
  9. Click Save to save the new inbox rule. 

     
  10. Repeat Steps 2-9 to add another SPAM filtering rule with the header phrase that contains “X-Spam-Level: ***”. Note: IMSS recommends adding both the X-Spam-Status and X-Spam-Level rules.

     
  11. It should also be noted that X-Spam-Level can be adjusted to fewer than three stars (one or two). However, by doing so, additional messages including legitimate email are more likely to be moved into your Junk mailbox.