My Exchange server is 2003 and on a shared cluster. TodayI found the following error is being logged. "Exchange HTTP Virtual Server Instance 100 (server): The IsAlive check for this resource failed." Does anyone encounter this before ?

Hi, First please check the http error logs to see if you have error-connection refuse. If not, then please post the error information here. The location for http error logs is systemroot\System32\LogFiles\HTTPERR Then please check cluster log which locates at %SystemRoot%\Cluster\Cluster.log and then post the error information here.BTW,I'd like to know if it is a single copy cluster. More information to share with you: To turn off TCP Chimney by using the Netsh.exe tool, follow these steps: 1. Click Start , click Run , type cmd , and then click OK . 2. At the command prompt, type Netsh int ip set chimney DISABLED , and then press ENTER. Troubleshooting a Windows Server Clusterhttp://msdn.microsoft.com/en-us/library/aa949696(BTS.10).aspx Regards, Xiu

have you changed ip address on cluster http://support.microsoft.com/kb/315691 also check this one http://www.microsoft.com/technet/support/ee/transform.aspx?ProdName=Exchange&ProdVer=6.5.6940.0&EvtID=1005&EvtSrc=MSExchangeCluster&LCID=1033 Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|