I recently deployed a full mesh Cisco Meraki network which replaced really old networking equipment and a 6yr old ASA5505 router. Anyway, the only drawback to to having the Cisco Meraki MX100 is the fact that you can't have two private IP addresses attached to a static IP address when NAT'ing. Sort of lame, but all the other features have me sold.
Anyway, I have an Exchange 2007 box and a Sonicwall which share the same Static address... Well, not anymore. I do have a spare static IP. I want to make sure I'm not crazy, but if I were to filter all the webmail related traffic from the exchange box with the new IP and keep the spamfilter on the same static as it is now, the only I'd have to do is change the URL/records with the new URL and change the address for the active sync for mobile phones? Does that make sense?