Hi all. We have a win2k3 cluster running exchange 2003 sp2.We have a DC & additional DC in the domain. In our 2ndexchange cluster node I get the following 2errors and we can't send mail but we can receive mail through this node. Other node works fine. Event Type:ErrorEvent Source:NETLOGONEvent Category:NoneEvent ID:5719Date:10/11/2007Time:6:09:36 AMUser:N/AComputer:MIL-IT-MAIL-02Description:This computer was not able to set up a secure session with a domain controller in domainEXAMPLE due to the following: There are currently no logon servers available to service the logon request. This may lead to authentication problems. Make sure that this computer is connected to the network. If the problem persists, please contact your domain administrator. ADDITIONAL INFO If this computer is a domain controller for the specified domain, it sets up the secure session to the primary domain controller emulator in the specified domain. Otherwise, this computer sets up the secure session to any domain controller in the specified domain. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Event Type:ErrorEvent Source:KerberosEvent Category:NoneEvent ID:4Date:10/11/2007Time:9:42:48 AMUser:N/AComputer:AIS-IT-MAIL-02Description:The kerberos client received a KRB_AP_ERR_MODIFIED error from the server host/ais-it-mail-02.example.lk. The target name used was cifs/ais-it-mail-01. This indicates that the password used to encrypt the kerberos service ticket is different than that on the target server. Commonly, this is due to identically named machine accounts in the target realm (EXAMPLE.COM), and the client realm. Please contact your system administrator. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Folks any idea on what's causing this & how to resolve this issue??????????? Thank you.

Have you configured your Virtual Server for Kerberos? http://technet.microsoft.com/en-us/library/a7cbe10f-0d07-4023-a268-11cd2cda8b3d.aspx Troubleshooting Kerberos http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/security/tkerberr.mspx Deli