I have example.com configured cPanel and I do not use it as mail server. I have created new subdomain in Cloudflare called mailer.example.com and installed Virtualmin on new Ubuntu server with hostname as mailer.example.com.
I have setup MX record for mailer.example.com in Cloudflare. It is working fine.
Now I have generated DKIM for my host called mailer.example.com.
Its selector is 202111.
Now I have added TXT record in Cloudflare:
Name = 202111._domainkey.mailer
and
Content = "<DKIM value given by Virtualmin>"
But in mail-tester.com and MxToolbox, I am getting that no DKIM record found for my domain as well in DNS lookup, I can not see any text record for my domain called mailer.example.com.
I think I am missing something but not getting idea about it. Let me know if someone can help me for same.