Cisco IronPort not blocking uTorrent download

[Mohammed Asif C Y]

      Hi, We have Cisco IronPort Model:S160 Version : 7.7.0 and we are trying to block uTorrent but still it is not blocking it completely. When users download uTorrent file from home and connect it in office LAN it starts downloading it. We want to block this also, is there any way to block using IronPort or it has to be done in ASA??

Regards

MAC