Log Name: Application Source: MSExchange ADAccess Date: 4/29/2010 9:16:15 AM Event ID: 2123 Task Category: Topology Level: Warning Keywords: Classic User: N/A Computer: EAI-MAILCLUS-01.eafg.local Description: Process STORE.EXE (PID=4972). Exchange Active Directory Provider is unable to connect to the Domain Controller EAI-DC2.eafg.local although its service location (SRV) resource record was found in the DNS The query was for the SRV record for _ldap._tcp.dc._msdcs.eafg.local The following domain controllers were identified by the query: eai-dc2.eafg.local eai-dc-01.eafg.local eafg1.eafg.local eai-dc-02.eafg.local eai-pdc.eafg.local Common causes of this error include: - Host (A) records that map the name of the domain controller to its IP addresses are missing or contain incorrect addresses. - Domain controllers registered in DNS are not connected to the network or are not running. For information about correcting this problem, type in the command line: hh tcpip.chm::/sag_DNS_tro_dcLocator_messageHa.htm Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="MSExchange ADAccess" /> <EventID Qualifiers="32772">2123</EventID> <Level>3</Level> <Task>3</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2010-04-29T13:16:15.000Z" /> <EventRecordID>24796</EventRecordID> <Channel>Application</Channel> <Computer>EAI-MAILCLUS-01.eafg.local</Computer> <Security /> </System> <EventData> <Data>STORE.EXE</Data> <Data>4972</Data> <Data>EAI-DC2.eafg.local</Data> <Data>_ldap._tcp.dc._msdcs.eafg.local</Data> <Data>eai-dc2.eafg.local eai-dc-01.eafg.local eafg1.eafg.local eai-dc-02.eafg.local eai-pdc.eafg.local </Data> <Data> type in the command line: hh </Data> <Data>tcpip.chm::/sag_DNS_tro_dcLocator_messageHa.htm</Data> </EventData> </Event> the above tow server doesn't exists anymore (shutdown already fore more than a week) eai-dc2.eafg.local eai-pdc.eafg.local

Hi, What's the symptom for your Exchange server after appearing the error message? Did the Outlook client connect Exchange server being affected? Thanks Allen

only one is affected but it was fine before.