Cannnot monitor IDRAC6 with IPMI

[msalvatori]

Got a zabbix server version 3.2.7 running on a centos 7, and I am trying to monitor a IDRAC 6 host with IPMI.

In the IDRAC was created an user with admin privileges.

The credentials for this user are ok.

In zabbix server the host was created and this user credentials add to the IPMI tab. The authentication alg was set to MD5.

Zabbix Server is returning the error:

cannot connect to IPMI host: [16777411] Unknown error 16777411

Here is result of running ipmitool from the server:

Sending IPMI/RMCP presence ping packet
Received IPMI/RMCP response packet:
IPMI Supported
ASF Version 1.0
RMCP Version 1.0
RMCP Sequence 255
IANA Enterprise 4542

ipmi_lan_send_cmdpened=[1], open=[2053345744]
Channel 01 Authentication Capabilities:
Privilege Level : ADMINISTRATOR
Auth Types : MD2 MD5
Per-msg auth : disabled
User level auth : enabled
Non-null users : enabled
Null users : disabled
Anonymous login : disabled

Proceeding with AuthType MD5
ipmi_lan_send_cmdpened=[1], open=[2053345744]
No response from remote controller
Get Session Challenge command failed
Error: Unable to establish LAN session
Error: Unable to establish IPMI v1.5 / RMCP session


Can anyone tell me what is wrong?