How to enable DKIM spam protection for outgoing emails of particular domain in Plesk

Plesk for Windows kb: how-to Plesk for Linux ABT: Group B Ideal

Applicable to:

How to enable DKIM spam protection for outgoing emails of particular domain in Plesk?

Note: if external DNS provider is used, contact your DNS owner in order to add DKIM record. Refer to this instruction for DKIM public key.

2. Enable DKIM protection for particular domain:

via Graphical User Interface (GUI):
1. Log into Plesk
2. Go to Domains > example.com > Mail Settings, mark Use DKIM spam protection system to sign outgoing email messages and press OK:
via Command Line Interface (CLI):
- for Linux:
  1. Connect to Plesk server via SSH.
  2. Run the command:
    
    # /usr/local/psa/bin/domain_pref --update example.com -sign_outgoing_mail true
- For Windows:
  1. Connect to Plesk server via RDP.
  2. Run the command:
    
    C:\> "%plesk_cli%\domain_pref.exe" --update example.com -sign_outgoing_mail true