2 Questions if anyone can help. Are the retention settings available pre-SP1 for Exchange 2007? and, if so... What is the overhead for enabling (it is my understanding that the retention settings are disabled by default)them on the 30-day default? Meaning, what are the storage implications to the server? Anyone have any ideas? I have been able to find very little on this feature on the Net or in books. I can't even find how to enable it. Thanks ahead of time.