OSEM does not recognize client

[AlexZhang]

I used centralized OSEM server to recieve snmp trap from proliant servers. I submitted a test trap from one client. In "notification" page on OSEM, it appeared " configuration" instead of "delivered" for the delivery status. It complained that server "unknown" to OSEM. But OSEM has already had this server included in the managed system list.
Anybody can help troubleshooting this?
Thanks
Alex

[A. van Berk]

This likely means that OSEM is not able to perform an SNMP GET from that system.

First of all check that the SNMP settings are correct.

If that doesn't solve the issue i advise you to upgrade to OSEM 1.4.1. Some of these issues should be fixed here.