Just to confirm, dead here too since yesterday. Tried all 3 ports listed for Antpool and no good. Showing "Socket connect failed: Connection refused" here but I can mine on other pools just fine. 3 emails in to 3 different addresses at Bitmain and only an autoreply saying volume is high and it might take a while.
Try mining at a pool where they'll actually help you out (and pay you more) 