I'm in the process of setting up email on my RAQ. I got almost everything down, can recieve, can log on and send. Great.
Except every email sent gets returned "Host unknown"
The RAQ's DNS settings point to my registrar's DNS server (PRIMARY) and then to the RAQ itself (SECONDARY)
I had thought the registrar would be a good DNS server to use, can anyone suggest why it doesn't recognise other domains? or where I should point it to? (except my ISP which is Japanese and I can't find the data)

The RaQ DNS servers should be your ISPs. Never point it at itself; it will only be able to resolve domains that you enter records for that way. And unless you want to manually duplicate the internet on your RaQ...

The registrar's DNS servers probably only provide info about domains that are registered there, not the internet in general.