resync should setup dkim record
Related to #6025, it would be nice if the Resync tool could correct missing DKIM records. The propogation of DKIM record from mail_domain to dns_rr is currently a feature of the user interface, and neither resyncing dns nor resyncing mail domains will ensure that the DKIM record is setup in dns, you must edit each email domain in the ui (a pain with admin protection, where you must switch to the client, then edit, then switch back....).