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Setting Up Spam Filter

If you receive undesirable correspondence to an e-mail address that you cannot or do not want to remove, consider setting up spam filter for your mailbox. To do this,

To switch on spam filtering for a mailbox:

  1. On your Home page, click the domain name you need.
  2. Click the Mail icon in the Services group.
  3. Click the e-mail address you need.
  4. Make sure that SpamAssassin is enabled: see whether the SpamAssassin status shows On in the Info group. If it shows Off, click the Mailbox icon in the Tools group, then select the Enable spam filtering check box, and click OK.

Now all the incoming mail will be filtered on the server side. By default, spam filter does not delete spam mail, it only adds the "X-Spam-Flag: YES" and "X-Spam-Status: Yes" headers to the message, and "*****SPAM*****" text string to the beginning of Subject line of each message recognized as spam. These settings are fine if you prefer to filter mail with a filtering program installed on your local computer – once mail has been retrieved from your mailbox.

If you rely entirely on the Plesk server's spam filter, you may configure it so as to automatically delete the suspicious messages as they come. To configure the spam filter, follow the instructions below.

To configure the spam filter:

  1. On your Home page, click the domain name you need.
  2. Click the Mail icon in the Services group.
  3. Click the e-mail address you need.
  4. Click the Spam Filter icon in the Tools group. Configure the following settings as desired:
  5. To save your changes, click Set.
  6. If you do not want to receive e-mail from specific senders, add their e-mail addresses to the spam filter's black list.
  7. If you want to be sure that you will not miss e-mail from specific senders, add their e-mail addresses to the spam filter's white list.

You can improve accuracy of spam detection by training the spam filter on the e-mail messages that you have in your mailbox.

To improve accuracy of spam detection:

  1. On your Home page, click the domain name you need.
  2. Click the Mail icon in the Services group.
  3. Click the e-mail address you need.
  4. Click the Spam Filter icon in the Tools group.
  5. Click the Training icon in the Tools group.

    All e-mail messages you have in your mailbox are presented on the screen. Each message is accompanied by an icon in the left column, which tells if a message is recognized as spam - , non-spam - , or not recognized at all - . If you have already trained your spam filter on a message and the results were recorded in the spam filter's database, an icon is shown in the right column.

  6. Train the spam filter.

    In most cases, you can tell if a message is spam by looking at its subject line and sender's name. If they do not give you any clue, try looking inside the message using your e-mail program or webmail interface.

  7. Once finished with training, you can remove spam e-mails from your mailbox using your e-mail program or webmail interface.

If you have accidentally made your spam filter learn a great number of spam e-mails as non-spam or vice versa, your spam filter will likely produce incorrect results. In this case, clear the spam filter's database and then repeat training.

To clear spam filter's database:

  1. On your Home page, click the domain name you need.
  2. Click the Mail icon in the Services group.
  3. Click the e-mail address you need.
  4. Click the Spam Filter icon in the Tools group.
  5. Click the Training icon in the Tools group.
  6. Click the Clear button.

To switch off spam filtering for a mailbox:

  1. On your Home page, click the domain name you need.
  2. Click the Mail icon in the Services group.
  3. Click the e-mail address you need.
  4. Click the Mailbox icon in the Tools group, then clear the Enable spam filtering check box, and click OK.