symantec messaging gateway 10.6

I am new to this product and I have to deploy for symantec messaging gateway 10.6 as POC. We have our mail server in exchange 2010 and all exchange related configuration is on same. The users are around 800. Now what configurations do I need to configure in exchange server so that all mail trafics should in and out through symantec message gateway (SMG) so that only good mails should reached to clients. Please do provide required relevant resources for the same.

Thanks in advance