Could not set the disk threshold

[blue_sky5429]

I faced the famous issue on my HP SIM5 "Could not set the disk threshold, the agent did not accept the request.". Already I overcome this issue by importing certificate from HP SIM and trust by cert on HP 4.2(with 10 servers) on 5 projects.But here this issue is unique.SNMP string as READ WRITE and trap destination as HP SIM server and CERT imported from console.Also i can able to browse remote servers SMH from the HP SIM server. There is no problem mailing (got alert for process, reachable, traps and etc). The only problem is with the disk threshold.

I belive some settings need to set on HP SIM or related to firewall. Any one help to over come this issue.

Config:

HP SIM5/ Agent ver 7.5 all windows 2000 server(having 200 servers)