University of California, Riverside

C&C Antispam



Minimizing False Positives


The spam filtering technologies employed on UCR's e-mail system are highly effective and accurate. However, it is impossible for any such technology to be 100% accurate, and occasionally legitimate messages will be tagged as spam and placed in a user's Junk Mail folder. Computing & Communications recommends utilizing the Safe Sender, i.e. Allow List, for individual addresses in order to reduce such "false positives." Please view the instructions for using the Allow List.  Most importantly, if you wish to ensure that you don’t miss the occasional false positive, you will need to regularly check your Junk Mail folder to be certain that no legitimate messages have ended up there.

Some users, however, may require broader measures for reducing false positives. The directions below detail methods for minimizing the number of false positives. While the procedures described below will minimize these messages, there is no way to completely eliminate the possibility of false positives without deluging a user with annoying and often inappropriate spam. The methods outlined below should reduce the number of false positives to a bare minimum.

Tips for Managing Your Spam

  1. Be sure to regularly check the Junk Mail folder to ensure that no messages from legitimate senders have been placed there. If you find a message from a legitimate sender, move it to your Inbox and respond appropriately. Be sure to delete the other messages in the Junk Mail folder regularly to minimize its size.
  2. When sorting the mail in your Junk Mail folder, you may find it helpful to sort the mail by the sender and/or the subject line of the e-mail. Spam messages are often duplicates or variants of particular messages, and frequently come from the same or similar user accounts. Grouping messages in this way can make it easier to sort any legitimate e-mail from the spam.

    The sorting can be accomplished in the following way, depending on your e-mail client:
    1. In the Exchange OWA interface, enter the Junk Mail folder, and click on the drop down arrow next to "Arrange by Date" and select "From" instead. This will sort the messages by sender. To sort them by Subject, select "Subject" in the "Arrange by..." dropdown.
    2. In Outlook, enter the Junk Mail folder, and then click on the From column heading at the top of the list of messages. This will sort the messages by sender. To sort them by Subject, click on the Subject column heading.
    3. In Eudora, enter the Junk Mail folder, and then click on the Who column heading at the top of the list of messages. This will sort the messages by sender. To sort them by Subject, click on the Subject column heading.

More Information 

General Campus Information

University of California, Riverside
900 University Ave.
Riverside, CA 92521
Tel: (951) 827-1012

Department Information

Computing & Communications
Computing & Communications Bldg.

Tel: (951) 827-4741
Fax: (951) 827-4541
E-mail: helpdesk@ucr.edu

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