I think I'm almost there in getting Exchange 2013 SP1 UM working with CUCM 9.1.2...I've got two issues at the moment that I need a little help with.
1) When I dial my VM pilot (6040) from a UM enabled extension it prompts to enter an extension. When I dial the same extension and let it ring to VM, Exchange picks up and says "the person you are trying to reach does not have a valid voice mail box on our system".
2) This just started happening this afternoon, when I dial my VM pilot (6040) exch3 picks up as thats what I have my route pattern pointing to. If I enter the extension of a mailbox on exch2, I get stuck in a endless loop.
I've followed this post as a guide but it hasn't resolved my issue.
https://supportforums.cisco.com/discussion/11914031/exchange-2013-um-and-cucm-86
My Exchange environment looks like this:
Site 1:
exch1 - CAS/Mailbox, used for mainly utility type work, journal, dedicated SMTP flows etc
exch2 - CAS/Mailbox, part DAG13
exch3 - CAS/Mailbox, part of DAG13
Site 2:
exch2dr - CAS/Mailbox, part of DAG13
exch3dr - CAS/Mailbox, part of DAG13
DAG13 is stretched between two sites, there are no users at our DR site so CUCM is pointing to Site 1 for UM. Each site has an internet facing CAS-only server for OWA/EAS etc.
Any help is greatly appreciated. I'd love to get rid of Unity.
EDIT:
I just found this event in the event logs:
The Microsoft Exchange Unified Messaging service on the Mailbox server received a diverted call with ID "d51600-3a3140c5-9b8-c1414ac@EXCH3-IPADDR" for extension "4099" on UM dial plan "CUCM" from UM IP gateway "CUCM IP", but no UM-enabled mailbox for the corresponding extension could be found. Please check the extension and make sure that the corresponding mailbox is enabled for UM and associated with the correct UM dial plan.