1. setup failover stratum for port you are mining on. i.e
stratum+tcp://nnc.mypool.name:31742
stratum+tcp://mypool.name:31742
2. Mine on the port which supports your hardware
(back-end pool configurations have banning setting that vary per coin and if your IP is profiled high submit rate you can be banned. This is an attempt to prevent what is called small DIFF stealing)
3. Add this string of text to your miner config --no-submit-stale
without it some miner software will display message (Stale Share Dectected -Submitted (user) - Too many of this will get you banned as well)
With this ARGUMENT added you should see (Stale Share Dectected - discarding)
Wolf0 XMR is nototious for submitting duplicate shares and I am not sure how to add this argument to it configuration file although most mining software has a help section. To view a list of help options in command prompt type (sgminer --help)