SharePoint 2010 - MSSQL 2008 connectivity

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http://serverfault.com – Our SharePoint server has some issues connecting over to the MSSQL instance (different server ). The error message is :Cannot generate SSPI context .(Microsoft SQL Server )-even when trying to connect from the Management Studio (over to Database Engine). If I try to connect from my laptop then I can connect fine with my user to that database , if I try to connect from the SP server it does not work(same error message ).If I try to connect to the Analysis Services I get Authentication failed - the system detected a possible atempt to compromise security . Please ensure that you can contact the (HowTos)