I'm in the process of migrating our Exchange to 2K3. I first built a new 2K3 server in same org/admin group/domain as our 2K server. All looked good until I moved my mailbox to the 2K3 server. Mail bound for that mailbox, as well as NEWSERVER-IS@DOMAIN.SUFFIX, just sat in a queue with the FQDN of the 2K3 server. So, I uninstalled that server and completely rebuilt it as a 2K server. All in all I get the same thing. I have verified that port 25 is open for both servers. Also, I'm seeing event id 4000 warnings in the logs. PLEASE SOMEBODY HELP!!!
Same routing group. Both servers are using the same DNS servers. DNS shows both have A & PTR records as well as MX records. Is there something else I should be checking for?
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