http://stormwdumgah7rpl6fdj4yhrl2i2a7j3bkzyjcv5qxk3a6253n22thyd.onion/blog/anondns
The DNSCrypt server that receives the traffic from the relay can see your DNS traffic, but not your IP. So even if a DNSCrypt server is logging, they won't be able to see your real IP. If a relay is logging, they won't be able to see your DNS traffic. Some DNSCrypt servers (like ours) are also running relays, so obviously those setups could log both the client IP and the DNS traffic.