Is it actual now for mining with Claymore on ethermine.org?
it works just fine... also on other ethash coins
beware that if you setup the failover to true it will be loading dwarfpool's servers automatically as well
EDIT: .... or not I'm confused
EDIT2: ohh... I see now. It has hardcoded servers POOL_HOST_FAILOVER1,2,3, so if you enable POOL_FAILOVER_ENABLE = True make sure you change these vars