What folder/file exceptions should be made for Office Communications servers?

I have Symantec Anti Virus on the server now, I want to get SEP on it, I need to know what exceptions should be in place for this type of server. I do not want SEP sacking an important file that can bring down communications. Can you please provide me with a list of file/folder exceptions?

Thank you

The Server is a Windows 2003 Server, I want to install the Latest version of SEP.

Thank you