We installed an exch. 2007 server in single forest, single domain, single exch. 2003 server environment. We did a typical installation and installed hub transport, client access and mailbox role on the same machine. All went smooth and looks working fine with few issues. We moved few mailbox on new server and are working fine
1: mailbox users on both servers can send and recieve mails to each other.
2: mailbox users on both servers can recieve mails from internet
3: mailbox users on exch 2007 server can send mails to internet.
Now the problems:
1: mail sent to internet from mailbox user on exch 2003 does not go and stay in the queue on the 2K3 exchange server. (please note that we have an email proxy installed at the internet gateway (filewall level) and that is now configured to allow outboud mails from exch. 2007 server and Exch. 2007 is NAT to our public IP). My understanding is that outbound internet mails from the exch. 2003 should go to exch. 2007 server and from there it shoud use the exch 2007 internet send connector to deliver the mail to internet. If we just reverse the setting on our firewall all the mails accumulated in the queue on EXCH 2003 are instantly delivered which means exch 2003 server is still using its own smtp internet connecter.
ON the system manager of exch 2003 under Routing group/First routing group/ connectors I can see two connecters
a) exch 2003 to exch 2007
My questing is should we jsut delete the second one or some other setting needs to be done to resolve the issue?
2: Moving of the mailbox from exch 2003 to exch 2007 server finished with success and the users is able to work without any issue on the exch 2007 server but exch. 2003 still shows the mailbox with a red cross on it. We manually tried to purge but it gives follinwing error form the system manager. "the operation cannot be performed because the mailbox was alerady reconnected to an existing user." We have stopped moving further mailbox just to make sure if this is not a serious issue.
3: Only Non domain users on exch. 2007 are unable to download offline address book.