I am in the process of migrating SBS 2003 server to 2008 R2 DC and exchange 2010. I already performed the following already:
1. Join new server to domain
2. prep AD
3. Make 2008 R2 a DC
4. Transfer DHCP
5. Install exchange 2010 on another 2008 R2
6. migrate mailboxes & public folders
The company is running smooth with mail but I need to uninstall exchange 2003, move over the 5 FSMO roles, and run DCPROMO on the SBS 2003.
when I install the exchange I am using the self-signed certificate mail.mydomain.com
I wanted to use the same url mail.mydomain.com on the new exchange 2010 but it is still pointing to the SBS 2003. We have an A record for mail.mydomain.com in our internal DNS pointing to our public IP. I am not sure how to approach this and need some guidance and help.
The exchange 2010 url mail.mydomain.com/owa works internally but not externally and I wanted to test to make sure the exchange 2010 can function properly without the SBS 2003 so I added FW entries to allow the new exchange 2010 server for SMTP and HTTPS when I disable the FW entries for the SBS 2003 I cannot receive emails from outside the network but I can send them outside the network fine. Is there a way to test the exchange 2010 properly before I uninstall exchange 2003 on SBS?
I notice in the exchange 2010 console the send connector was called "SmallBusiness SMTP connector" but there was no value on the source server tab. I assume I will need to create a new one once the exchange 2003 is uninstall?
I have been using this great guide for reference but I am still confuse about how to point the exchange 2010 properly and make sure its primary mail server and not the SBS 2003:
Any help would be appreciate. Thank you