Here's the scenario:
I'm not an expert in Exchange. We had a consultant come in to migrate most of the users to a new 2003 box with exchange 2003. There was an OU (named Migration) that was setup to replicate with 5.5 directory. One of my colleaque was cleaning up the AD and renamed this Migration OU to something else, and also created a bunch of other OUs.
Here's the problem:
When creating a user on AD on the 2003 box, it is no longer replicating to the NT's 5.5 exchange. GAL is on the 2003 box, so user shows up on GAL, internal emails inbound and outbound is ok. But since the SMTP is on 5.5, external inbound email are bounced back with: The recipient name is not recognized error.
I went to the AD Connector Services and edited the Connection Agreement:
- From Windows tab: added all of the newly created OUs
- From Exchange tab: changed the default destination from Migration OU (initial & deleted OU) to Transition1 OU.
Tested by creating a new user on Transition1 OU, but still no luck in replicating it to 5.5.
Please help shed some light. Thanks!