Link to home
Start Free TrialLog in
Avatar of prutter

asked on

Removing First Exchange server from Domain BIG PROBLEM

A while ago we upgraded hardware and went to exchange 2003 Enterprise adn now I have to remove the server now.  We had both servers running together and replicated all public folders, moved all mailboxes and have been running fine.  I went thru all the REHOMING KB articles and they appear correct.  When I go and try to remove exchange from teh old server I get teh following error message.

The component "Microsoft Exchange Messagin and Collaboration Service" cannot be assigned the action remove becuase: One or more users currently use a mailbox store on this server. These users must be moved to a mailbox store on a different server or be mail disables before uninstalling this server.

The only users that show up in that server's mailbox store are:
System Attendant

When you try to delete you are told you can't, if you try to move you are told you can't and if you try an exchange task on just one mailbox no tasks are listed.

I searched everywhere and found someone with a similar issue adn went thru these steps using LDP.EXE

To resolve this issue:

   1. Start Ldp.exe. This tool is included with the Windows 2000 Support Tools package.
   2. Click Connection, and then click Connect.
   3. Enter the name of a domain controller, and then click OK.

      It is recommended that you enter a domain controller in the root domain of the forest.
   4. Click Connection, and then click Bind.
   5. Enter the user name, password, and domain name of an administrative account, and then click OK.
   6. On the View menu, click Tree, make sure that the Base DN box is blank, and then click OK.
   7. In the left pane, click to expand the following object:

      Your Domain/Configuration/Services/Microsoft Exchange/Your Organization/Administrative Groups/Your Administrative Group/Servers/Your Server/InformationStore/Your Storage Group
   8. Double-click Your Mailbox Store.
   9. In the right pane, scroll to the bottom of the screen to find all the attributes for Your Mailbox Store, and then locate the homeMDBBL attribute.

      The attribute should look similar to the following:

      5> homeMDBBL: CN=Administrator,CN=Users,DC=Domain,DC=com; CN=John Doe,CN=Users,DC=Domain,DC=com; CN=SystemMailbox{1A5E0095-2AA3-4579-AB26-872B74AA19F0},CN=Microsoft Exchange System Objects,DC=Domain,DC=com; CN=SMTP (SERVERNAME-{1A5E0095-2AA3-4579-AB26-872B74AA19F0}),CN=Connections,CN=Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=Domain,DC=com; CN=Microsoft System Attendant,CN=SERVERNAME,CN=Servers,CN=First Administrative Group,CN=Administrative Groups,CN=Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=Domain,DC=com;
      The text "5>" that occurs before the homeMDBBL attribute name indicates that there are five mailboxes on this server. Each entry is separated with a semicolon (;). In this example, the five mailboxes are:
          * CN=Administrator,CN=Users,DC=Domain,DC=com
          * CN=John Doe,CN=Users,DC=Domain,DC=com
          * CN=SystemMailbox{1A5E0095-2AA3-4579-AB26-872B74AA19F0},CN=Microsoft Exchange System Objects,DC=Domain,DC=com
          * CN=SMTP(SERVERNAME-{1A5E0095-2AA3-4579-AB26-872B74AA19F0}),CN=Connections,CN=Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=Domain,DC=com
          * CN=Microsoft System Attendant,CN=SERVERNAME,CN=Servers,CN=First Administrative Group,CN=Administrative Groups,CN=Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=Domain,DC=com
  10. When you have identified which users have mailboxes on this store, you can use the Active Directory Users and Computers snap-in to either move the mailboxes to a different store or delete the user's mailbox.

      Note You do not need to take any action for any entries that exist in the Microsoft Exchange System Objects or Configuration containers.

When I look to see what mailboxes are still there all I see is system mailbox.  Here is what I see in Lldp.

      1> quotaNotificationStyle: 1;
      4> homeMDBBL: CN=SystemMailbox{DB50E7A3-85D8-4DC3-A3E5-706D18F284A7},CN=Microsoft Exchange System Objects,DC=LUTZCPA,DC=com; CN=Local Host,CN=Users,DC=LUTZCPA,DC=com; CN=Microsoft System Attendant,CN=EXCHANGE,CN=Servers,CN=First Administrative Group,CN=Administrative Groups,CN=Lutz and Company,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=LUTZCPA,DC=com; CN=SMTP (EXCHANGE-{DB50E7A3-85D8-4DC3-A3E5-706D18F284A7}),CN=Connections,CN=Lutz and Company,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=LUTZCPA,DC=com;
      1> maximumObjectID: <ldp: Binary blob>;
      1> name: Mailbox Store (EXCHANGE);
      1> objectGUID: db50e7a3-85d8-4dc3-a3e5-706d18f284a7;
      1> systemFlags: 1610612736;
      1> legacyExchangeDN: /o=Lutz and Company/ou=First Administrative Group/cn=Configuration/cn=Servers/cn=EXCHANGE/cn=Microsoft Private MDB;

Can anyone help out wo I can remove this??  Any help is appreciated.  Thanks.


Avatar of rakeshmiglani
Flag of India image

Check the following article.

Error message when you try to remove Exchange 2000 Server from a mailbox server that no longer hosts mailboxes: "One or more users currently use a mailbox store on this server"
You also have the option to remove Exchange manually

How to manually remove an Exchange 2000 installation
Before you start hacking around, take a look at the end of my migration article.

There I have a technique for finding accounts with unused mailboxes. Remember that Exchange doesn't create the mailboxes until they are required, so if you have accounts that were mail enabled but have never been used, then a mailbox will not be created.

Avatar of prutter



What I see when I search is a Local Host mailbox and systemmailbox.  I deleted the local hose mailbox and still get the same error message that there is a mailbox still there.  Am I able to delete the system mailbox from ADUC or do I have to use ADSIEDIT?? ADSIEDIT makes me a bit nervous since it's my production environment.  After deletiing that localhost mailbox is there anything I need to do after dletingi it??  Waiting for a response.  Thanks guys!!
Avatar of prutter


Just want to mention that Exchange has been removed from the old server.  It must have needed to replicate or something.  I just waited a bit and tried again.  Thanks for all teh help!!

Avatar of Netminder

Link to home
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial