Resolved DKIM not working for new added domain?

[Azurel]

CentOS Linux 7.8.2003 (Core)
Plesk Obsidian Version 18.0.28

I have created a new domain and in DNS are this two lines missing

> "_domainkey.example.com." and "default._domainkey.example.com."

It is present in the old domains. In Mail Server Settings is "DKIM spam protection" checked for "Allow signing outgoing mail" and "Verify incoming mail".

In Domain under "Mail Settings" is option "Activate mail service on this domain" checked.

Did I forget something here?

 

[IgorG]

Go to domain's Mail Settings and enable "Use DKIM spam protection system to sign outgoing email messages" option there.

 

[Azurel]

Oh, I'm so blind. Thank you so much.