Mitigate Unity 4.x with Exchange

Unanswered Question
Aug 12th, 2010

Hello specialists.

Our customer has Unity 4.x with Exchange.

We can leave message on voicemail, but the messages aren't send to Exchange and MWI don't works

But if we delete de subscriber and re-create, all works fine.

How can we to mitigate this? Resync unity/exchange?



I have this problem too.
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Bradford Magnani Thu, 08/12/2010 - 19:12

Hi Peterson,

It's hard to say without some more information.  You will not get MWI until the message successfully reaches the Exchange mailbox.

Is Exchange on-box, or off-box?  Unified or Voice Mail Only?

Is this happening for 100% of the users?

Do you see the messages stuck in the Commserver\UnityMTA directory for these users?

Have you tested whether or not this happens for only external, or only internal, or both types of calls?

What errors/warnings are you getting in the application log?

You can always re-run the Message Store Configuration Wizard, it will need to bring Unity's services down when its ran but will then restart them once completed.

Hope that helps,



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