We are upgrading from Exchange 2007 to Exchange 2010. We have some mailboxes on Exchange 2007 and some on Exchange 2010. Our SPAM appliance points to the Exchange 2007 server. If I point the SPAM appliance to our Exchange 2010 server will the users still on Exchange 2007 get their e-mail? Is the bridge joining Exchange 2007 to Exchange 2010 bi-directional? The bridge is the default bridge created when Exchange 2010 was installed. Thanks!!!

You can deliver email to any Exchange server in the Exchange org and Exchange will sort out where the email has to go. There is no "bridge" between Exchange 2007 and 2010, you are thinking of the routing group connector that was created when Exchange 2007 is installed with Exchange 2003 already in place. Plus if there was such a "bridge" it would apply to internal email as well. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

We are upgrading from Exchange 2007 to Exchange 2010. We have some mailboxes on Exchange 2007 and some on Exchange 2010. Our SPAM appliance points to the Exchange 2007 server. If I point the SPAM appliance to our Exchange 2010 server will the users still on Exchange 2007 get their e-mail? Is the bridge joining Exchange 2007 to Exchange 2010 bi-directional? The bridge is the default bridge created when Exchange 2010 was installed. Thanks!!! Short answer; Yes :)Jonas Andersson | Microsoft Community Contributor Award 2011 | MCITP: EMA 2007/2010 | Blog: http://www.testlabs.se/blog | Follow me on twitter: jonand82