Symptoms
- Generating new signing keys and selecting them via the Active DKIM Selector in Plesk > Domains > example.com > Mail Settings is possible
- After deactivating and reactivating DKIM spam protection in Plesk > Domains > example.com > Mail Settings, a new DKIM key is not visible in Plesk > Domains > example.com > Mail Settings > How to configure external DNS
- The necessary keys are also not present in
/etc/domainkeys/
Cause
The issue was confirmed as a bug with ID #PPPM-14160 DKIM key not visible and was resolved permanently in Plesk Obsidian version 18.0.57.
Resolution
Update Plesk Obsidian to version 18.0.57 by using the information in this article:
How to update Plesk Obsidian to the latest build?
Afterwards, go to Plesk > Domains > example.com > Mail Settings , uncheck the Use DKIM spam protection system to sign outgoing box, save the changes, check it and save the changes once again.
That should make the DKIM appear in Plesk > Domains > example.com > Mail Settings > How to configure external DNS.