Right, setting up my SCOM box, and got to the point where i need to add some servers for monitoring from a separate part of the infrastructure, on a different domain which doesnt have a 2 way trust.....so.....
I followed this guide http://blogs.technet.com/b/pfesweplat/archive/2012/10/15/step-by-step-walkthrough-installing-an-operations-manager-2012-gateway.aspx to add a gateway server into SCOM which sits on the other domain, which showed up in the console as 'Not Monitored', then i followed the certificate import stuff, all seemed hunky dory and i have the certs on the gateway and i imported it into the SCOM box using the MOMCertImport tool, sweet. Re-started the health service on the gateway and SCOM server.....
Problem being i am still seeing these errors on the gateway server still -
The OpsMgr Connector could not connect to MSOMHSvc/xxx.xxx.xxx 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.
and
Failed to initialize security context for target MSOMHSvc/xxx.xxx.xxx The error returned is 0x80090303(The specified target is unknown or unreachable). This error can apply to either the Kerberos or the SChannel package.
Any help gratefully received before i hurl it all out the window.
Cheers