@kwaleeb said in Conditional forwarder pointed to pfSense causes Error 5504:
It was the "Access Lists" tab,
That list, the "Access Lists" is only used when you check :
a2ca9cd2-b93f-45b8-ba23-9e8450519fe4-image.png
I've checked that "Disable Auto-added Access Control" so I have to populate the list myself :
6da90395-e4bb-40d9-96fb-2745d615b8cc-image.png
Normally, the default is :
445eda5f-d0dd-4600-8a43-f4c38b69437e-image.png
will do just fine, as all 'known' interfaces will get included :
By default, IPv4 and IPv6 networks residing on internal interfaces of this system are permitted.
If you have other networks, and these aren't known to pfSense (unbound), you have to use the Access Lists tab.
For IPv4 stuff, this isn't really hard.
Things gets a bit more complicated if you have a double stack (IPv4 and IPv6) - see my image.