How to enable DKIM in Plesk?

Question

How to enable DKIM (DomainKeys Identified Mail) spam protection in Plesk?

Answer

1. Log into Plesk.

2. Go to Tools & Settings > Mail Server Settings > DKIM spam protection section.

3. Enable the Allow signing outgoing mail or/and Verify incoming mail (For Plesk on Linux only) and press the OK button:

   • Verify incoming mail (Plesk for Linux)

     This option switches on DKIM checking for all incoming mail. All messages are checked, and if the check fails, are marked with a special header.

   • Allow signing outgoing mail

     This option enables customers to switch on the DKIM signing of outgoing mail on a per-domain basis.

     Warning: It does not automatically enable the signing of outgoing email messages. To use DKIM, users must switch it on for individual domains.

     • How to enable DKIM spam protection for outgoing emails for a separate domain in Plesk?

     • How to enable DKIM signing for all domains on Plesk for Linux?

     • How to enable DKIM signing for all domains on Plesk for Windows server?