Previous versions of Forefront Security for Exchange didn't have any antispam features - we used the built-in Exchange antispam capabilities to help protect us again spam. While the Exchange features were "good enough", there was a lot of room for improvement.
Some things to know about Forefront Security for Exchange 2010 Beta 2 antispam features:
- New content filter based on Cloudmark technology
- Uses SCL ratings similar to that provided by Exchange
- Changes in SCL range distribution - most messages will be either 1 or 9
- Detection rate of 99%
- Less time foraging through the Junk Mail folder looking for false positives!
Check out Alex Nikolayev's post on Forefront Security for Exchange 2010 antispam features over at:
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer