I just finished testing to quell my own paranoia, and www.doxpara.com reports my ASG as "appears to be safe" I'm running 7.201, and have only one DNS forwarder set to point to OpenDNS. (208.67.222.222)
I also changed my forwarder to point to a non-patched public DNS server, 4.2.2.1, and it then reported as being vulnerable. This seems to be different to what some commentors said on the previous DNS thread. I wonder if they still had forwarders from their ISP listed?
Just to be sure, I repeated the test several times, on a couple different networks/asgs and the results were the same in each case. Astaro does NOT appear to be vulnerable unless you point it to a non patched DNS server.