Zone failed validation test. Contact support (FDL/)...

[melcon]

I'm trying to add a new domain "jamwith.us.to." but I keep getting the message on the subject: Zone failed validation test. Contact support (FDL/jamwith.us.to)...

Is there some restriction on domain names allowed?

[snarked]

Did you try it without the trailing period?

[melcon]

Yeap. Actually, I have never tried with the trailing period, till now. It was just a typo when posting the question in here. Either way, error message stays the same.