DKIM DNS records are not added to the DNS zone on Plesk server

Symptoms

• DKIM DNS records are not added to the DNS zone.
• DKIM support is not enabled either on server or domain level.

Cause

It is the expected behavior. Plesk adds DKIM DNS records in case DKIM support is enabled only.

Resolution

• To enable a possibility of DKIM signing of outgoing email server-wide:

  Go to Plesk > Tools & Settings > Mail Server Settings > DKIM spam protection and select Allow signing outgoing mail:
  

•  To enable DKIM signing of outgoing email for an individual domain:

  Go to Plesk > Subscriptions > example.com > Mail tab > Mail Settings tab (select the domain name if there are several) and select Use DKIM spam protection system to sign outgoing email messages:
  
  If it was already enabled, re-enable it by unchecking the checkbox Use DKIM spam protection system to sign outgoing email messages and checking it again.

Note: DKIM signing works only for domains that use the Plesk’s DNS server. The DNS service must be activated on a domain.