Nxspool changed server use 23.92.19.104 to connect - dns are taking time to propagate...
Thanks for letting us know!

Does it mean any limitation for mining, right now? Should we do any change to the bat file for the cpuminer?
No limitation for mining, you may replace nxspool.com by 23.92.19.104 while dns are propagating.
Ok, thanks! I had a problem today morning, the miner cannot connect to the server, so it is probably because of the address.
So should the bat file looks like this?
nexus_cpuminer.exe 23.92.19.104 9549 2nxsaddress threads