refused smux peer: oid SNMPv2-SMI::enterprises.674.10892.1, descr Systems Management SNMP MIB Plug-in Manager

I had the following entry appear in the messages file every few seconds

Based on my research, I found someone who said:

More than likely a Dell machine running OpenManage. Ensure that the following line is in your snmpd.conf if this is the case:

# Allow Systems Management Data Engine SNMP to connect to snmpd using SMUX
smuxpeer .1.3.6.1.4.1.674.10892.1

I added the above line to /etc/snmp/snmpd.conf file and that resolved the problem.

reference: https://zenoss-users.zenoss.narkive.com/fAYwHMu3/refused-smux-peer-flood-in-syslog