My SBS2003 server have few application event log as "msexchangeal could not read the root entry on directory 8063" , while i open Active directory user and computers , when i double click an user object , the msc console will pop up (Title bar) Microsoft Active Directory - Exchange Extension (Message Body) The operation failed ID no:80004005 Microsoft Active Directory - Exchange Extension I have test log on to my OWA nd sent mail to other internal domain user , no problem on receiving or reading mail , was there any problem with my exchange or AD , how can i solve it?

Hi, Does this error keep happening? This problem happens if ExchangeAL service failed to read the information from AD. It may be caused by the network connectivity issues. Please run dcdiag on your exchange server and see if there is any errors.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT

Yes , it happen frequently , with every 5 minute interval Type Date Time Source Catergory Event User --------------------------------------------------------------------------------------- Error 7/6/2011 5:35 MSExchangeAL Service Control 8063 N/A Error 7/6/2011 5:30 MSExchangeAL Service Control 8063 N/A Error 7/6/2011 5:25 MSExchangeAL Service Control 8063 N/A Error 7/6/2011 5:20 MSExchangeAL Service Control 8063 N/A I have run DCDiag and it show that few error , weird that i am using domain administrator account for running the command still getting access is denied...and there was some error on test advertisng , what does it mean? Domain Controller Diagnosis Performing initial setup: [sbs2003] Directory Binding Error 5: Access is denied. This may limit some of the tests that can be performed. Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\TALOTESRV001 Starting test: Connectivity ......................... TALOTESRV001 passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\TALOTESRV001 Starting test: Replications ......................... TALOTESRV001 passed test Replications Starting test: NCSecDesc ......................... TALOTESRV001 passed test NCSecDesc Starting test: NetLogons ......................... TALOTESRV001 passed test NetLogons Starting test: Advertising Warning: DsGetDcName returned information for \\sbs2003.taloteko.ad, when we were trying to reach TALOTESRV001. Server is not responding or is not considered suitable. ......................... TALOTESRV001 failed test Advertising Starting test: KnowsOfRoleHolders ......................... TALOTESRV001 passed test KnowsOfRoleHolders Starting test: RidManager ......................... TALOTESRV001 passed test RidManager Starting test: MachineAccount ......................... TALOTESRV001 passed test MachineAccount Starting test: Services IsmServ Service is stopped on [TALOTESRV001] ......................... TALOTESRV001 failed test Services Starting test: ObjectsReplicated ......................... TALOTESRV001 passed test ObjectsReplicated Starting test: frssysvol ......................... TALOTESRV001 passed test frssysvol Starting test: frsevent ......................... TALOTESRV001 passed test frsevent Starting test: kccevent ......................... TALOTESRV001 passed test kccevent Starting test: systemlog ......................... TALOTESRV001 passed test systemlog Starting test: VerifyReferences ......................... TALOTESRV001 passed test VerifyReferences Running partition tests on : ForestDnsZones Starting test: CrossRefValidation ......................... ForestDnsZones passed test CrossRefValidation Starting test: CheckSDRefDom ......................... ForestDnsZones passed test CheckSDRefDom Running partition tests on : DomainDnsZones Starting test: CrossRefValidation ......................... DomainDnsZones passed test CrossRefValidation Starting test: CheckSDRefDom ......................... DomainDnsZones passed test CheckSDRefDom Running partition tests on : Schema Starting test: CrossRefValidation ......................... Schema passed test CrossRefValidation Starting test: CheckSDRefDom ......................... Schema passed test CheckSDRefDom Running partition tests on : Configuration Starting test: CrossRefValidation ......................... Configuration passed test CrossRefValidation Starting test: CheckSDRefDom ......................... Configuration passed test CheckSDRefDom Running partition tests on : taloteko Starting test: CrossRefValidation ......................... taloteko passed test CrossRefValidation Starting test: CheckSDRefDom ......................... taloteko passed test CheckSDRefDom Running enterprise tests on : taloteko.ad Starting test: Intersite ......................... taloteko.ad passed test Intersite Starting test: FsmoCheck ......................... taloteko.ad passed test FsmoCheck

i have solve it, problem was invalid name on dns , server hostname was changes to sbs2003 after some patch was applying , reverse the server hostname using netdom have resolve the error.