Sounds like bug CSCeb20635. The Release-note for this bug ought to be viewable by those outside Cisco.
If not, then....
Symptom:
On a subscriber's phone, the Message Waiting Indication (MWI) lamp doesn't
turn on, when a new voice message arrives. Also MWI doesn't turn off,
when the new message has been saved or deleted. If this subscriber also
uses Message Notification, Unity doesn't call a notification device when
new messages arrive.
Conditions:
Generally upon creating a mail file in Lotus Domino the owner of the file is to
left blank. The owner field is set by the first registered person to open the
mail file. When the Lotus Domino user is imported into Cisco Unity the
ownership information is used for MWI and Message Notification functionality.
If the Owner field on the mail file of a Unity subscriber is set incorrectly,
Cisco Unity fails to provide MWI and Message Notification for the subscriber.
Workaround:
If a Unity subscriber experiences MWI and/or Message Notification failures,
the subscriber needs to check the configuration of his/her mail file:
1. Using Lotus Notes Client open the your mail file.
2. Go to Tools->Preferences and check "This mail file belongs to:" field under User Configuration section. Note: Notes 5.x may use
"Actions->Preferences"
3. Set "This mail file belongs to:" field to the Unity subscriber's name.
4. For Lotus DUCS to immediatley recognize this change, the following tell
"tell" commands must be entered in the Lotus Domino server console window where
the user's mail file is kept:
a) "tell ucadminp flush"
followed by
b) "tell ucadminp refresh"
note: the same effect of Step 4 will occur approximatley once per hour
automatically by Lotus DUCS.
