OpManager snmp failing to query a Linux box.

OpManager snmp failing to query a Linux box.

I'm the Linux admin, and want to make sure I have the Linux box set up correctly to allow OpManager (which is running on a Windows box) to poll/query the Linux box.

snmp reports that it's running correctly:

[root@tcohepc151 snmp]# ps -ef | grep snmp | grep -v grep
root      1541     1  0 Sep20 ?        00:00:00 /usr/sbin/snmpd -Lsd -Lf /dev/null -p /var/run/snmpd.pid -a

and the snmpd.conf file is one that I've used successfully on other boxes.

Any ideas on what I've missed?