With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppIntfSMTPReadFailure
Cisco Call Applications Application Interface SMTP Read Failure
1.3.6.1.4.1.9.9.146.1.6.20.1.6
Total number of failed SMTP read transactions from call applications to this SMTP server.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppIntfSMTPReadFailure on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.