Question : Excessive spam getting past Exchange 2007 Edge Transport server.

I have an Exchange 2007 Edge Transport server letting in excessive spam through to users over the last week and a half. The auto update for anti-spam is enabled, there are no Exchange critical updates at Microsoft Update site. I have not installed the service pack for Exchange yet.

I need to find out how to stop the spam from getting through. Thanks for the help!

Answer : Excessive spam getting past Exchange 2007 Edge Transport server.

Sorry multi trend I was busy in the past few days.
it seems that the message is passing because the SCL is set to 4, so you can configure the agent to reject message on SCL of 4, and then add the required safe sender to the safe list at the client side, and configure safelist aggregation.
http://technet.microsoft.com/en-us/library/aa998280.aspx
add to that I will recommend using an RBL like spamhuas as it will allow you to reject messages and reduce the spam level.