If anyone was following this ongoing thread, we finally resolved it:
Basic problem:
Parent domain, and child domain connected across a VPN. Single Exchange server in the parent domain. Child domain clients unable to connect to Exchange mailboxes.
It turns out you need to do 2 steps manually:
1. Run /domainprep in each child domain that will be accessing the exchange server
2. Manually create a Recipient Update Service object in System Manager for each child domain, and do a Rebuild on the object.
I did eventually find documentation on the first step needing to be done. But I still can't find anything that states the second is necessary. We ended up opening a PSS case for this issue.
Thought some might find it useful.
Chris Bodnar
Network Engineer
Essent Corporation
610-559-9999 X:24
List Charter and FAQ at:http://www.sunbelt-software.com/exchange_list_charter.htm