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Filtering Spam in Apple Mail — Advanced  
 
Summary: Set up mail filters to decrease junk mail (also known as spam) in your e-mail inbox. This advanced form of filtering allows you to spam "score" and create rules to prevent specific e-mail messages from being tagged as spam.

In the right place? See also basic instructions.

What to do How to do it
1 Determine your preferred minimum spam "score."
  1. UCSD's spam filtering system assigns each message a score, representing the probability that the message in question is spam.
  2. A message is tagged as spam if it receives a score of 5.0 or above, represented in the mail message in the X-Spam-Level header by the number of asterisks (*).
  3. Choosing a lower value will result in a greater volume of spam in your spam folder and also increase the likelihood of a legitimate mail message being sorted as spam.
  4. To determine the level at which you feel comfortable filtering, examine the assigned score on a variety of messages in your inbox.
  5. View the mail headers of your e-mail by highlighting a message.
  6. Click the View pull-down menu, and select Show All Headers. The spam score usually appears near the bottom.
2 Create a spam mailbox.
  1. Open Apple Mail.
  2. From the Mailbox menu, choose New Mailbox.
  3. Call the mailbox Spam.
  4. Click OK.

    Task screenshot
3 Open the Preferences window.
  1. From the Mail menu, choose Preferences.

    Task screenshot
4 Begin creating a rule.
  1. Select the Rules icon.
  2. Click Add Rule.

    Task screenshot
5 Open the Header List.
  1. Click From and choose Edit Header List.

    Task screenshot
6 Add the X-Spam-Level header.
  1. In the Header box, type X-Spam-Level
  2. Click Add Header.
  3. Click OK.

    Task screenshot
7 Complete rule setup.
  1. For Description, type Spam, and change the rule so that it reads as follows:

    If any of the following conditions are met: X-Spam-Level Contains ******

    (with the number of *'s equal to the number you decide after looking at your e-mail)

    Perform the following actions: Transfer Message to mailbox: Spam

  2. Click OK.
  3. You may now close the Rules window.
  4. To create an exception for a specific e-mail, continue to Step 8; otherwise, skip to Step 9.

    Task screenshot
8 Create an exception for a specific e-mail address.
  1. In your Spam rule, change any to all in If any of the following conditions are met.
  2. Click the + button next to the line reading X-Spam-Level Contains ******.
  3. Change the new line to read From and Does not contain.
  4. Type the e-mail address you want to exclude in the final box (e.g., gblufin@hotmail.com).
  5. If you want to add more exceptions, repeat the above steps for each exception.

    Task screenshot
9 Pay attention to filtered spam.
  1. Incoming e-mail that appears to be spam will automatically be moved to the new folder you created.
  2. It's possible for legitimate e-mail to be marked as spam. Periodically check the contents of the Spam folder to ensure that this has not occurred before deleting its contents.
10 Turn off "Junk Mail" filtering in Mac OS X 2.x and later (optional).
  1. Apple has included a feature that heuristically filters spam. This means you train it with what you think is spam, and eventually it will "know you well enough" to be able to filter the spam into a separate mailbox.
  2. Some users find this method provides too many "false positives" where legitimate mail is labeled as "junk." To turn this feature off:
    1. Select the Mail menu.
    2. Point to Junk Mail and choose Off.


    Task screenshot


Questions? Contact the ACT Help Desk, (858) 534-1853.


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Last reviewed/updated on April 25, 2008 (see more info)
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