With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppIntfSMTPGroup
Cisco Call Applications Application Interface SMTP Group
1.3.6.1.4.1.9.9.146.3.2.12
A collection of objects to display statistics related to interaction between application instances and SMTP servers.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppIntfSMTPGroup on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.