Hi,
I ran into a situation in an Exchange 2010 environment recently that I am having a hard time understanding so I am posting the symptoms here, hoping someone can clarify :-)
The setup consists of three servers that are all running Exchange 2010 SP1 on Windows Server 2008 R2 (SP1)
Each server has the MBX, Hub and CAS role installed and are configured in a DAG setup as well as Public Folder replication. Each server has a copy of the Public Folder database.
Recently one of the servers was shut down (cleanly) for maintenance and immediately users started complaining about messages sent from public folders were not going out anymore.
When the server camer back online, all the delayed messages were immediately resumed and delivered.
This made me wonder how an Outlook client decides which HUB Server to select when sending a message, and how that message is then routed internally when There are no specific routing rules that I know of.
Best Regards,
Henrik