Unity 4.0(5), CCM 4.1(3), Exchange Integration, Unified Messaging.
We are having a problem intermittently with MWI. We noticed the problem yesterday.
Problem: Some users noticed that they had messages, but their light was not on. To verify, I logged into their mailbox and marked a voice message as unread and watched the Port Status Monitor for the MWI to go out... Nothing.
Supporting info: Other users in the same mailstore, same Active Directory OU, and had the same permissions were working fine. I had at least 3 users experiencing this problem.
Solution: Restarting the AVMsgStoreMonitor service ultimately fixed the problem.
Question: I am trying to understand WHY this happened, and how can I monitor for this if it happens again.