Auto Reply Email setup on Inbound Email settings does not work

Hi ,

I've setup an auto reply template on the inbound mail account setup in Sugar, however when an email is received on the inbound mailbox(which is a Group Mail Box ) , the auto response email is not sent back to the sender from Sugar. I thought this would be a straightforward setup for an admin user however i'm left scratching my head . 

Is there something i'm missing ?