Antminer E3 couldn't mine Ethereum anymore. This is the basic setup for Callisto mining pool. You could set up other Dagger Hashimoto (Ethash) pool just changing the host:port address. You could find these settings in the help section of every pool.
YOUR_ADDRESS is your Ethereum wallet address.
ASIC_ID is the name of the ASIC as you want it to be shown in miner's statistics page. Maximum 32 characters. Use English letters, numbers and symbols "-" and "_". You could leave it empty.
2Miners mining pools: https://2miners.com/
2CryptoCalc mining profit calculator: https://2cryptocalc.com/