Guys, I have this problem. We are still in a mixed mode 2003-2007. When we create a mailbox in 2007 and receive a mail in it the indexer gives next errors. This for all our mailboxes! Any help? Event Type:ErrorEvent Source:MSExchange Search IndexerEvent Category:General Event ID:102Date:6/6/2008Time:12:03:53 PMUser:N/AComputer:SRVAEXCH02Description:Exchange Search Indexer has failed to crawl the mailbox (1c2bda51-2974-402b-aac5-853da53accca) due to an exception (Microsoft.Mapi.MapiExceptionUnknownUser: MapiExceptionUnknownUser: Unable to make connection to the server. (hr=0x80004005, ec=1003)Diagnostic context: Lid: 23065 EcDoConnectEx called [length=194] Lid: 17913 EcDoConnectEx returned [ec=0x3EB][length=56][latency=0] Lid: 19778 Lid: 27970 StoreEc: 0x3EB Lid: 17730 Lid: 25922 StoreEc: 0x3EB at Microsoft.Mapi.MapiExceptionHelper.ThrowIfError(String message, Int32 hresult, Int32 ec, DiagnosticContext diagCtx) at Microsoft.Mapi.ExRpcConnection.Create(ConnectionCache connectionCache, ExRpcConnectionCreateFlag createFlags, ConnectFlag connectFlags, String serverDn, String userDn, String user, String domain, String password, String httpProxyServerName, Int32 ulConMod, Int32 lcidString, Int32 lcidSort, Int32 cpid, Int32 cReconnectIntervalInMins, Int32 cbRpcBufferSize, Int32 cbAuxBufferSize) at Microsoft.Mapi.ConnectionCache.OpenMapiStore(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, ClientIdentityInfo clientIdentity, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId) at Microsoft.Mapi.ConnectionCache.OpenMailbox(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, ClientIdentityInfo clientIdentity, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId) at Microsoft.Exchange.Search.MailboxCache.GetMailbox(ServerMdbAndMailboxGuids guids) at Microsoft.Exchange.Search.RetriableOperations.GetMailboxForUser(ThreadLocalCrawlData crawlData, Guid mailboxGuid, Object unusedSourceParam, Object unusedParam1, Object unusedParam2) at Microsoft.Exchange.Search.RetriableOperations.DoRetriableMapiOperation[SourceType,ReturnType,Parameter1Type,Parameter2Type](ThreadLocalCrawlData crawlData, Guid mailboxGuid, SourceType source, Parameter1Type parameter1, Parameter2Type parameter2, MapiOperationDelegate`4 operationDelegate) at Microsoft.Exchange.Search.Crawler.CrawlUser(Guid mailboxGuidToCrawl, ThreadLocalCrawlData crawlData, Boolean finalRetry)). For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. ---------------------------------------------------------------------- Event Type:WarningEvent Source:MSExchange Search IndexerEvent Category:General Event ID:107Date:6/6/2008Time:12:03:53 PMUser:N/AComputer:SRVAEXCH02Description:Exchange Search Indexer has temporarily disabled indexing of the Mailbox Database SG01\DB01 (GUID = 3c34670f-60ec-49e5-a1d8-2579dab4c3be) due to an error (Microsoft.Mapi.MapiExceptionUnknownUser: MapiExceptionUnknownUser: Unable to make connection to the server. (hr=0x80004005, ec=1003)Diagnostic context: Lid: 23065 EcDoConnectEx called [length=194] Lid: 17913 EcDoConnectEx returned [ec=0x3EB][length=56][latency=0] Lid: 19778 Lid: 27970 StoreEc: 0x3EB Lid: 17730 Lid: 25922 StoreEc: 0x3EB at Microsoft.Mapi.MapiExceptionHelper.ThrowIfError(String message, Int32 hresult, Int32 ec, DiagnosticContext diagCtx) at Microsoft.Mapi.ExRpcConnection.Create(ConnectionCache connectionCache, ExRpcConnectionCreateFlag createFlags, ConnectFlag connectFlags, String serverDn, String userDn, String user, String domain, String password, String httpProxyServerName, Int32 ulConMod, Int32 lcidString, Int32 lcidSort, Int32 cpid, Int32 cReconnectIntervalInMins, Int32 cbRpcBufferSize, Int32 cbAuxBufferSize) at Microsoft.Mapi.ConnectionCache.OpenMapiStore(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, ClientIdentityInfo clientIdentity, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId) at Microsoft.Mapi.ConnectionCache.OpenMailbox(String mailboxDn, Guid mailboxGuid, Guid mdbGuid, ClientIdentityInfo clientIdentity, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId) at Microsoft.Exchange.Search.MailboxCache.GetMailbox(ServerMdbAndMailboxGuids guids) at Microsoft.Exchange.Search.RetriableOperations.GetMailboxForUser(ThreadLocalCrawlData crawlData, Guid mailboxGuid, Object unusedSourceParam, Object unusedParam1, Object unusedParam2) at Microsoft.Exchange.Search.RetriableOperations.DoRetriableMapiOperation[SourceType,ReturnType,Parameter1Type,Parameter2Type](ThreadLocalCrawlData crawlData, Guid mailboxGuid, SourceType source, Parameter1Type parameter1, Parameter2Type parameter2, MapiOperationDelegate`4 operationDelegate) at Microsoft.Exchange.Search.Crawler.CrawlUser(Guid mailboxGuidToCrawl, ThreadLocalCrawlData crawlData, Boolean finalRetry)). For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Thanks a lot Alex

Hi Alex, Is your System Attendence mailbox fine on databases mentioned in event log? Check in disconnected mailbox, it shouldnt be there

I think the SA is fine, It starts without problems. When I check the disconnected mailboxes I don't have any. Thing is it still may be residing on the exchnage 2003 server. Do I need to move that mailbox? IF yes how? Another thing is I never succeded to move a mailbox from 2003 to 2007. But everything else is working fine.. Alex

Hello Alex, You dont have to move the SA mailbox. It should be created on Exchange 2007 server. This article mighthelp yousince symptoms look similar with your problem. Verify HomeMDB attribute of SA mailboxes for the databases which are coming in your event log. Outlook 2007 users cannot view Free/Busy times for any user

Hello Amit, man you rox!! that was it the HomeMDB was not set for the SA http://smarthost.blogspot.com/2007/06/test-post.html Thanks a lot everything works fine now!! Cheers Alex

Wonderful!! Good to hear that issue resolved