Hi Everyone, I have a situation in which we were moving our HQ from one state to another. These are the details... We have a fixed IP address at the OLD-HQ where we have an AD (WS 2008) and Exchange 2007. It works fine for all our emails and OWA. Now the company has decided a few months ago to move the HQ to another state but due to economy they started this but have not gotten a fixed IP address at the NEW-HQ as yet. So at the NEW-HW we have another AD 2008 (AD-2) and we have installed Exchange 2010, but due to no fixed IP we want to have all the emails sent to Exch2010 (w/o fixed IP) and have email from users at NEW-HQ log into AD2 and Exch2010 and when they send email the Exch2010 will forward to the Exch2007 and in-turn Exch2007 will send the email out. So essentially Exch2007 will become a HUB transport per say. The additional complication is that when a user wants to access his regular email through OWA will he see his email or will it be in the mailbox store at Exch2010? If so is there a way around this. Also when Exch2010 send the email to Exch2007 can this be done through the internet or do we have to have a VPN to do this. Thanks in advance for any suggestions.

Are you building a new Active Directory? You're not keeping the same forest and Exchange organization? If so, the SMTP routing can probably be accomplished but it's not easy. Having an Exchange 2007 proxy OWA for an Exchange 2010 server is not possible whether it is in a separate forest or not. Acquiring a fixed IP address will likely be a whole lot cheaper than what you're trying to do. It would be a whole lot easier to just move the server from one office to the other. Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi, How do you link the new HQ to the old HQ? Are the exchange 2007 and exchange 2010 in the same organization? Are two exchange servers using a same external SMTP name space such as @domain.com? For mail flow problem, if they are in the same organization, you just need to create a send connector and set the exchange 2007 server as the source server. If they are in the difference organizations, you need to create a send connector (address space: *) on exchange 2010 and set the exchange server 2007 as its smart host. Then the outbound will be forward to exchange 2007 for further deliver. For inbound emails, you need to configure sharing SMTP name space between exchange 2010 and Exchange 2007 servers: More information: http://www.msexchange.org/articles_tutorials/exchange-server-2007/management-administration/accessing-shared-email-addresses-part1.html As for OWA accessing, Exchange 2007 OWA is unable to proxy exchange 2010 mailbox users to the exchange 2010 CAS server ), that means the Exchange 2010 mailbox users cannot log into their mailbox through exchange 2007 OWA. You must has an Internet-facing Exchange 2010 CAS server.