Hi All, I am new to exchange server, and I am facing some issue, I created a domain and DNS also in same machine (windows server 2003 sp1 x64bit) and I installed Exchange server 2007 RTM typical roles, its completed smoothly, and then I created one user mail box successfully, then I rebooted the machine, from next restart I am facing problems in creating mail boxes, Sytem attendant service also not able to start, even I try manually I am not able to start that service. when I try to start service logs this error Event Type:ErrorEvent Source:MSExchangeSAEvent Category:General Event ID:2059Date:6/15/2007Time:2:21:50 PMUser:N/AComputer:CHELSEADescription:The DSProxy dll is required but cannot be loaded, error 'c00700cb'. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Please help me resolving this issue Regards Srinivas

Waiting for guidlines, please respond ASAP Srinivas

Previously I observed error while running dcdiag Testing server: Default-First-Site-Name\CHELSEA Starting test: Connectivity The host e40d5720-2cda-4f7e-91a1-550f7cc69df0._msdcs.MEDUSA.loc could notbe resolved to an IP address. Check the DNS server, DHCP, server name, etc Although the Guid DNS name (e40d5720-2cda-4f7e-91a1-550f7cc69df0._msdcs.MEDUSA.loc) couldn't be resolved, the server name (chelsea.MEDUSA.loc) resolved to the IP address (172.16.26.160) and was pingable. Check that the IP address is registered correctly with the DNS server. ......................... CHELSEA failed test ConnectivityDoing primary tests Testing server: Default-First-Site-Name\CHELSEA Skipping all tests, because server CHELSEA is not responding to directory service requests is this causes?, how can I resolve this

Hi when I try to restart system attendant service manually its giving following error Event Type:ErrorEvent Source:MSExchangeSAEvent Category:General Event ID:1005Date:6/15/2007Time:9:03:24 PMUser:N/AComputer:CHELSEADescription: Unexpected error The system could not find the environment option that was entered. Facility: Win32 ID no: c00700cb Microsoft Exchange System Attendant occurred. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Event Type:ErrorEvent Source:MSExchangeSAEvent Category:General Event ID:2059Date:6/15/2007Time:9:03:24 PMUser:N/AComputer:CHELSEADescription:The DSProxy dll is required but cannot be loaded, error 'c00700cb'. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. please respond

Run the ExBPA in this environment and see if it comes up with anything. Are all of your DCs at least W2K3 SP1?

Please I am getting this error while installation, can u update me on this? A transient failure has occurred. The problem may resolve itself in a while. The service will retry in 56 seconds. Diagnostic information: Cannot open mailbox /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=MAIL/cn=Microsoft System Attendant. Microsoft.Exchange.Data.Storage.ConnectionFailedTransientException: Cannot open mailbox /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=MAIL/cn=Microsoft System Attendant. ---> Microsoft.Mapi.MapiExceptionLogonFailed: MapiExceptionLogonFailed: Unable to open message store. (hr=0x80040111, ec=-2147221231) Diagnostic context: Lid: 18969 EcDoRpcExt2 called [length=251] Lid: 27161 EcDoRpcExt2 returned [ec=0x0][length=108][latency=0] Lid: 23226 --- ROP Parse Start --- Lid: 27962 ROP: ropLogon [254] Lid: 17082 ROP Error: 0x80040111 Lid: 26937 Lid: 21921 StoreEc: 0x80040111 Lid: 27962 ROP: ropExtendedError [250] Lid: 1494 ---- Remote Context Beg ---- Lid: 26426 ROP: ropLogon [254] Lid: 22970 Lid: 8620 StoreEc: 0x80040111 Lid: 10786 dwParam: 0x0 Msg: MAIL Lid: 1750 ---- Remote Context End ---- Lid: 26849 Lid: 21817 ROP Failure: 0x80040111 Lid: 26297 Lid: 16585 StoreEc: 0x80040111 Lid: 32441 Lid: 1706 StoreEc: 0x80040111 Lid: 24761 Lid: 20665 StoreEc: 0x80040111 Lid: 25785 Lid: 29881 StoreEc: 0x80040111 at Microsoft.Mapi.MapiExceptionHelper.ThrowIfError(String message, Int32 hresult, Int32 ec, DiagnosticContext diagCtx) at Microsoft.Mapi.ExRpcConnection.OpenMsgStore(OpenStoreFlag storeFlags, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, MapiStore msgStorePrivate, String& correctServerDn, ClientIdentityInfo clientIdentityAs, String userDnAs, String applicationId, CultureInfo cultureInfo) 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, WindowsIdentity windowsIdentityAs, String userDnAs, OpenStoreFlag openStoreFlags, CultureInfo cultureInfo, String applicationId) at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry) --- End of inner exception stack trace --- at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry) at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString, Boolean secondTry) at Microsoft.Exchange.Data.Storage.ConnectionCachePool.OpenMailbox(String serverDn, String userDn, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, Object identity, ConnectFlag connectFlag, OpenStoreFlag openStoreFlag, CultureInfo cultureInfo, String clientInfoString) at Microsoft.Exchange.Data.Storage.MailboxSession.Initialize(LogonType logonType, ExchangePrincipal owner, ADOrgPerson delegateUser, Object identity, OpenMailboxSessionFlags flags) at Microsoft.Exchange.Data.Storage.MailboxSession.CreateMailboxSession(LogonType logonType, ExchangePrincipal owner, ADOrgPerson delegateUser, Object identity, OpenMailboxSessionFlags flags, CultureInfo cultureInfo, String clientInfoString) at Microsoft.Exchange.Data.Storage.MailboxSession.OpenAsAdmin(ExchangePrincipal mailboxOwner, CultureInfo cultureInfo, String clientInfoString) at Microsoft.Exchange.Servicelets.SystemAttendantMailbox.Servicelet.Work() For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Try this: http://support.microsoft.com/kb/555859/en-us?spid=10926&sid=global

I just dealth with same issue here is the solution worked for me http://smtp25.blogspot.com/2009/08/dsproxy-dll-is-required-but-cannot-be.html best oz