This is definitely odd behavior and I know you have a TAC case open on this since I was helping your engineer look at it last evening. Please continue to work with him on it. We have a couple other cases that are also showing some odd behvior. Thing is didn't you get the Unity working by changing the format of the account to acct@domain instead of domain\acct?
yes it resolved my issue when change the account to email@example.com format. but still we have a major issue. When I add subscriber to Unity, it's not shown up as user in Exchange. and when I leave a message for that new subscriber, the message goes nowhere and is lost. So in this point, I think we have to troubleshoot AD and Exchange, then focus on troubleshooting Unity.
Yes that would be a new issue totally. I would open a new case for that. It does sound like there is a problem in that the Exchange mailboxes are not being created or are taking a long time. It could also be some odd permissions issues are still there.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.