As it was only installed a couple of days ago, I have very little to say about the product. So far it seems to have blocked everything it has seen. Time will tell as to how it really blocks the incoming spam.
I did have a great help in setting the equipment up. I highly commend the person that helped me. (Posted on 3/14/10)
We host email systems for clients in addition to our own email. Having a central location to manage virus and spam filtering is the right solution for us. (Posted on 10/30/09)