Well, I did some testing as well, and the capital W does not seem to be an issue.
Do you still get the 500 after the entry is gone?
Oh, wait, you say the _dmarc line is number 22? That’s kinda crazy as that’s a default entry for Mail-in-a-Box, meaning everyone has that line, without issue.
Let’s make sure we’re looking at the right thing. Did you succeed in reconstructing the ldns-signzone command?
I have this domain using an external email service but I’ll nuke those details too for good measure.
Okay so removing the dkim dmarc and so on from the fansdb url seems to have worked which is strange because they weren’t new records. But that is fixed.