Hi, i have installed on the Windows Server 2008 R2 a Exchange 2010 and after i switch this Server to the front (OWA and Outlook Anywhere) i got every secound this error in the eventlog. i think this Problem must have a contact with IIS and RPC over HTTP or the OWA, but everything works fine, so i don't find a direct Problem, only the Eventlog will be flooded. - <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> - <System> <Provider Name="Schannel" Guid="{1F678132-5938-4686-9FDC-C8FF68F15C85}" /> <EventID>36888</EventID> <Version>0</Version> <Level>2</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000000</Keywords> <TimeCreated SystemTime="2010-06-21T11:51:40.956846100Z" /> <EventRecordID>4086</EventRecordID> <Correlation /> <Execution ProcessID="496" ThreadID="6304" /> <Channel>System</Channel> <Computer>EXCHANGE2010.domain.local</Computer> <Security UserID="S-1-5-18" /> </System> - <EventData> <Data Name="AlertDesc">10</Data> <Data Name="ErrorState">1203</Data> </EventData> </Event> kind regards Alex

Hello OPERATOR76, Typically, this error may result from an SSL/TLS problem. Please have a look at this thread: Schannel Fatal Alert Error 48 http://social.technet.microsoft.com/Forums/en/windowsserver2008r2general/thread/74cfe52a-724e-4338-bd91-f2de99604523 Best regards, Harry This posting is provided "AS IS" with no warranties, and confers no rights.

Hello, i think the Problem can be the woldcard certificate for smtp, iss, pop and imap. the console told me, a wildcard certificate can not be used, so i use now the servercertificat itself and i'am waiting now for the next error in the eventlog, if there is no tomorrow i think i fixed it with this setting. My Wildcard certificat looks like this: AccessRules : {System.Security.AccessControl.CryptoKeyAccessRule, System.Security.AccessControl.CryptoKeyAccessR ule, System.Security.AccessControl.CryptoKeyAccessRule, System.Security.AccessControl.CryptoKeyAcc essRule} CertificateDomains : {*.xxxxx.com} HasPrivateKey : True IsSelfSigned : False Issuer : OU=Equifax Secure Certificate Authority, O=Equifax, C=US NotAfter : 28.03.2011 15:52:20 NotBefore : 27.12.2007 15:52:20 PublicKeySize : 1024 RootCAType : ThirdParty SerialNumber : 011001 Services : IIS, SMTP Status : Valid Subject : CN=*.xxxxx.com, OU=IT, O=My Comany, L=xxxx, S=xxxx, C=AT Thumbprint : xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

i have the same error allready and the change of the certificates doesn't help.