Hi, I think that the best possibility is to use a stratum proxy to connect to dwarfpool at the moment because dwarfpool's stratum implementation isn't supported by sgminer. The reason for that are the weird JSON replies of dwarfpool, which make it impossible to decide whether requests of sgminer were successful or not and sgminer assumes that its requests failed. Perhaps the operators of dwarfpool should be notified so that the issue can be fixed.