With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cueMboxOwner
cue Mbox Owner
1.3.6.1.4.1.9.9.420.1.2.2.1.2
The user name of the mailbox owner.
Back to CISCO-UNITY-EXPRESS-MIB MIB page.
IPHost Network monitor allows you to monitor cueMboxOwner on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.