20057: Failed to initialize security context for target MSOMHSvc/int-scom2012-01.domain.local The error returned is 0x80090303(The specified target is unknown or unreachable). This error can apply to either the Kerberos or the SChannel package.
21001: The OpsMgr Connector could not connect to MSOMHSvc/int-scom2012-01.domain.local because mutual authentication failed. Verify the SPN is properly registered on the server and that, if the server is in a separate domain, there is a full-trust relationship between the two domains.
20071: The OpsMgr Connector connected to int-scom2012-01.domain.local, but the connection was closed immediately without authentication taking place. The most likely cause of this error is a failure to authenticate either this agent or the server . Check the event log on the server and on the agent for events which indicate a failure to authenticate.