This question should be fairly straight forward for someone who knows. I am just upgrading to 2007 (had to talk them into a x64 first) and I have completed the install and am currently co-existing with my 2003 box. The 2003 is currently handling all of the external e-mail and it is also using IMF to do spam filtering. I know that 2007 is capable of some more advanced filtering but it appears that it is associated with the edge transport roles (which I can't install on my single x64 server). Is there a way to get the content filtering/IMF to work in a single server environment?