Currently your system makes users MANUALLY enter DKIM records into DNS to be monitored, despite most of the big email system providers all use the same DKIM selectors, selector1&2 for example from Microsoft 365. Since DKIM is basically now required to be used from major email providers like Yahoo, Google, and others, your system should automatically scan all of the major DKIM selectors defaults and still allow users to enter custom ones if necessary.

Automatically scan all of the major DKIM selectors defaults and still allow users to enter custom ones if necessary.