I have a fully functional Microsoft Exchange 2003 SP2 Front End/Back End Clustered non production environment. People use RPC/HTTP, OWA and ActiveSync to access their mail. I’ve recently installed an Exchange 2007 Server in this organization to take this non production network to the next level of testing. Email can be sent and received from mailboxes on the 2007 server. My question is how to make OWA and ActiveSync available on both the 2003 and 2007 Exchange Servers. I currently have a rule on my SonicWALL 2040 directing port 443 to my 2003 Front End Server. Please let me know if you have any suggestions.