Adding a DKIM record to Unbound
A problem arose on my mail server where my DKIM was failing as Unbound was not reporting the DKIM lookup. My Host DNS servers are configured but a DKIM record also needed to be added to Unbound for this to work properly. Fortunately I found this post from Jeff Arnold which made my life infinitely easier. Posting this here will I hope mean anyone searching for DKIM on pfSense will find it easily.