Setting Up Spam Protection Based on DomainKeys

To switch on spam protection based on DomainKeys:

  1. In Parallels Plesk Panel for Linux, go to Home > Mail Server Settings. In Parallels Plesk Panel for Windows, go to Home > Mail Server Settings > Spam Filtering tab.
  2. Under the DomainKeys spam protection group, select the following options:
  3. Click OK.

Now your mail server will check all incoming e-mail messages to ensure that they come from the claimed senders. All messages, sent from the domains that use DomainKeys to sign e-mail, which fail verification will be discarded. All messages, sent from the domains that do not participate in the DomainKeys program and do not sign e-mail, will be accepted without verifying.

To switch on signing outgoing e-mail messages for a single domain:

  1. Go to Domains > domain name > Mail > Preferences.
  2. Select the Use DomainKeys spam protection system to sign outgoing e-mail messages check box.
  3. Click OK.

To switch on signing outgoing e-mail messages for a number of domains at once:

  1. Click Domains.
  2. Select the check boxes to the left of the domain names you need. To select all domains in the list, select the upper left check box in the column heading.
  3. Click Group Operations.
  4. Under Preferences, select the Switch on option next to the Use DomainKeys spam protection system to sign outgoing e-mail messages field.
  5. Click OK.

Now, the following will happen for the selected domains: