Filtering Spam

Managing your Junk folder

Zimbra utilizes a powerful spam filter to determine whether messages from specific addresses or domains should be added to your junk folder.  Most filtering of unsolicited automated mail is handled by the spam filter before those mail messages reach your Inbox.

If you find a message in your Inbox that is spam, you can highlight it and click the Spam icon on the toolbar. The mail is moved to your Junk folder.

Sometimes a message can be put in the junk folder that is not really spam. You should check your Junk folder periodically to ensure that you are not missing any messages. Move messages that should not be marked as spam from your Junk folder.

You can empty the Junk folder by right-clicking the folder and choosing Empty Junk. In addition, the contents of the folder are automatically purged after an administration-configured number of days.

In addition to automatic Zimbra spam filtering, you can setup your mail preferences to identify specific addresses to block or not block in your Inbox.

Defining addresses to block and to allow in your mailbox

Most filtering of unsolicited automated mail (aka “spam” or “junk mail”) is handled by a spam filter before those mail messages reach your Inbox. This filtering helps to reduce the amount of spam that is put in your Inbox.

In addition to the automatic Zimbra spam filtering rules,  you can setup your mail preferences to identify specific addresses to block or not block in your Inbox. You create a list of addresses that should not be added to your Inbox and addresses that always should be added to your Inbox, but could be detected as spam. The spam filter uses this list to make sure you get the email you expect.

  • In the Block messages from area, specify email addresses from certain senders that should always be treated as spam.
  • In the Allow messages from area specify email addresses of people you trust so that their messages are not sent to your Spam folder. Messages from these email addresses are never blocked. You do not need to add all your trusted addresses to this list.  Add addresses to this list that for some reason end up in your Spam folder and you do not want them there, such as newsletters you subscribe to.

How to set up your Spam Mail Options

  1. Go to Preferences and select Mail.
  2. On the page that opens, scan to the Spam Mail Options section.
  3. Enter complete email addresses in the appropriate boxes, either Block messages from or Allow messages from.  You can enter up to 100 addresses for each.
  4. Click Save on the toolbar.

If you have questions or if you would like assistance with filtering spam e-mail, please contact the ITS Help Desk:

 Phone Support: (603) 535-2929
 Live Support (see link to the upper right)
 In person: Information Desk at Lamson Library and Learning Commons
 Submit a Support Ticket or Check the Status of an Existing Request (requires authentication with your myPlymouth username and password)

System Status

All ITS systems Operational

July 7th, 2014 by Jo-Ann

All ITS systems are operational. If you have any questions, please contact the Help Desk at or (603) 535-2929.

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